This Waterproof Coat Doesn't Use Gore-Tex (And That's a Good Thing)

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Ben Vallack

Ben Vallack

13 күн бұрын

I've always been fascinated by the discussion around Gore-Tex effectiveness and the idea of using a membrane in a coat for waterproofness has never sat well with me. As such I've been using an alternative to Gore-Tex for 20 years (I got the fleece in the old photos in the video when I was about 18) that I think is fascinating in the way it works and they are still quite an underdog in the outdoor waterproof coat scene.
This video is not sponsored by Paramo and I've bought all my Paramo coats with my own money. Learn more about the coats in this video:
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Пікірлер: 140
@mattbibbings
@mattbibbings Күн бұрын
That was a well put together piece. I teach outdoors and have done for 25 years. My Paramo Anaolgy jackets have worked longer in more environments and outlasted every other (and I've tried everything!) jacket I have. The core truth is that nothing is waterproof always and everywhere. Paramo Analogy (well looked after) is drier longer and in more places and situations. Our entire outdoor staff (20 outdoor teachers) are issued Paramo.
@BenVallack
@BenVallack Күн бұрын
Great comment thanks!
@BenVallack
@BenVallack 12 күн бұрын
Slight terminology correction: liquid water on a wetted out face fabric is just liquid water, I incorrectly referred to it as 100% humidity. The term '100% humidity' is best to only be used to describe moist air at the point it can't accept any more moisture. Much more on this in my next video.
@inevespace
@inevespace 11 күн бұрын
the problem you described in the video can be solved by higher air pressure inside. In general, vapor pressure near body is higher than outside because body is hotter. As result vapor migrates outside. But if outside temperature is close to body temp, vapor pressure outside can be higher if humidity is high enough. This is problem for both systems: membrane and 'fur'.
@BenVallack
@BenVallack 11 күн бұрын
@@inevespaceabsolutely, I get to the bottom of that in my next video. It's still a loose loose - if it's cool enough for vapour pressure differece you get condensation. If it's warm enough for similar temps you just get 100% RH on the inside so you get liquid sweat building up.
@TheYoutubeUser69
@TheYoutubeUser69 4 күн бұрын
i was mindblown as a child when I learned rain does not mean 100% humidity :D
@OverCowboy
@OverCowboy 12 күн бұрын
Yes! Hope to see more NikWax products available globally. I've never even seen a Paramo anywhere I buy, but I've been using NikWax liquids to improve water resistance of leather and clothing since about 2006. Going steady
@appuser
@appuser 9 күн бұрын
It's like you pre-empted my need to get a new coat... I'll be checking them out. Thanks for the tip Ben! As always, making life work better.
@daviddemmers130
@daviddemmers130 2 күн бұрын
I hate the fact that you have to DWR them often to keep them waterproof. Where a membrane jacket can wet-out but it will keep you dry if you are only mildy active. Where if you dont have the upkeep right on the paramo jackets you are just wearing any old jacket that will soak you if wearing in the rain.
@davef5916
@davef5916 17 сағат бұрын
Goretex jackets like Arcteryx also require a lot of upkeep to maintain their efficacy over time.
@tim.w5630
@tim.w5630 9 күн бұрын
I also have a Paramo Alta III for winter time and I love it. But honestly, as soon as it gets over ~15°C outside, you just cannot handle the thick, warm and heavy fabric that is the nature of Analogy products. This is where I still use my ultra light GoreTex (packlite) jacket. It also seems that you have quite a lot of money to blow on waterproof jackets. Paramo solutions (and GoreTex Shakedry) hover around 300 to 400£, which is a notable sum considering GoreTex starts at around 180£ (with cheaper membrane products around the 100£ mark). Not everyone has the money to "buy into" Paramo products. I hope that with popularity they will get a bit more affordeable without sacrificing on labor conditions and the environment. Cheers!
@MrGreenAKAguci00
@MrGreenAKAguci00 9 күн бұрын
Yeah... let's hope that the processes get streamlined, economy of scale will kick in and the prices will drop.
@BenVallack
@BenVallack 9 күн бұрын
I consider Paramo to be cheaper than Gore-tex actually - the Helki was £240. I just had a quick look on Arctreyx and saw plenty of Gore-Tex coats £400-£500!
@MrGreenAKAguci00
@MrGreenAKAguci00 9 күн бұрын
@BenVallack my hardshell Saleva goretex jacket that saved my ass a bunch of times in rain during warmer months and wet snow mixed with rain or freezing rain in winter was 160 EUR. It kept me fairly dry too (although I do have good base layers etc.) even while skiing, hiking, or riding a bike. I was just on the Paramo website their cheapest jacket is 320 EUR. Does it deliver twice the performance?
@TheShortStory
@TheShortStory 4 күн бұрын
@@MrGreenAKAguci00it might last twice as long, with proper maintenance. But that depends on your use I imagine
@Mark..P
@Mark..P 12 күн бұрын
Really well explained. 🙏
@ParkerBinion
@ParkerBinion 12 күн бұрын
Thank you!
@zab666
@zab666 6 күн бұрын
Really well made video, Ben! I was wondering how quickly those jackets are drying. For multi day hikes this could potentially be an issue if it's still wet in the morning. Other than that, it's a fascinating technology I wish I knew about before buying a rather expensive gore tex jacket.
@RC-qf3mp
@RC-qf3mp 11 күн бұрын
I have a heavy duty poncho/cape, which i can open up for airing out, and it has vent holes. I can hike in all-day rain for weeks.
@BenVallack
@BenVallack 11 күн бұрын
Yeah I reckon that is a good approach for ongoing situations like that!
@davemitas
@davemitas 9 күн бұрын
I once read a comment/reply posted on a forum: "The best raincoat you can buy is an umbrella"😂. To that end, my sketch book got a couple pages dedicated to toying with a coat that aired like an umbrella. Coats hang by gravity on shoulders and back unless you are a sailor on a trapeze. How bout a suitable material ( 3d airated foam?/ 3d plastic wire lattice?) around shoulders, upper back and hood to create an air gap, then maybe a battery fan to push moist air out of poncho style vents?
@RC-qf3mp
@RC-qf3mp 9 күн бұрын
@@davemitas umbrellas are good for non windy conditions and to protect from sun, but no good in windy downpours.
@davemitas
@davemitas 9 күн бұрын
@RC Yep. 100% agree on umbrella, hence the idea of air gap coat. Of course I'm just focusing on the moist warm air egress, the waterproofness from rain is its own issue. Rate of excersion is also key. Here's my current modus operandi: I've given up skiing in anything other than bluebird sunshine and whilst I still wear water proof pants in the morning for sitting on the potentially icy chairlift, by lunch I ski in cheap hoody and slick outer track pants so if I do fall(virtually never), snow doesn't stick, therefore stays dry. This combo doesn't stop me sweating, but within minutes I'm feeling totally dry for my next run!
@theloniuspunk383
@theloniuspunk383 11 күн бұрын
great channel!
@BenVallack
@BenVallack 11 күн бұрын
Thank you!
@tobias-edwards
@tobias-edwards 6 күн бұрын
Great video! Love the editing. When you mention the harm in producing Gore Text products (toxic waste, affected water supply, factory problems, etc.) it would be good to add links/pics to the video to support your claim :)
@BenVallack
@BenVallack 6 күн бұрын
Thanks! I just got that from the Wikipedia page: en.wikipedia.org/wiki/Gore-Tex
@tanvach
@tanvach 10 күн бұрын
I really wish we can more easily get Paramo products in the US. I've heard about their jackets for a while now, but have to wait until I visit the UK in the future to buy one.
@tim.w5630
@tim.w5630 9 күн бұрын
And in Switzerland (and rest of europe) please. I only got my Paramo because we went to England for a month. They should scale up their distribution capabilities asap
@dfgdfg_
@dfgdfg_ 10 күн бұрын
The jacket in the video is the HELKI
@bogorad
@bogorad 11 күн бұрын
I've been wearing Paramo (Cascada) exclusively since I first got it in 2011.
@edpikestone6800
@edpikestone6800 11 күн бұрын
Totally agree. I am a Paramo fan and have used their product for a long time. Also look at Ventile jackets as another alternative to GORE Tex. Ventile is a tight weave cotton that becomes waterproof as it gets wet. Take a look at Hilltrek (UK firm) as they specialise in it. Invented during WW2. I have a Ventile jacket and have been very impressed with it.
@BenVallack
@BenVallack 11 күн бұрын
Thanks! Yeah I did do some reading on Ventile and I do remember being interested. What kind of situations would you choose it over Paramo? Also, curious, were you an existing subscriber or is this the first video of mine?
@88sstraight
@88sstraight 11 күн бұрын
@@BenVallack Ventile is no longer an uncoated material, from what I’ve read it’s all produced in Switzerland these days and uses a DWR from the factory. It was invented before the war, for non-clothing purposes.
@edpikestone6800
@edpikestone6800 11 күн бұрын
@@BenVallack been a subscriber for about 2 years.
@BenVallack
@BenVallack 11 күн бұрын
@@88sstraightah that's interesting thanks
@danceswithbadgers
@danceswithbadgers 6 күн бұрын
​@@88sstraightI believe they treat the fabric because consumers expect to see water bead off a jacket, having been conditioned to expect this by the use of DWR on plastic garments. Ventile was developed before such compounds existed and was supposed to work by getting wet. The older version of Ventile produced in Switzerland used the toxic PFC treatment but the organic version is treated with Nikwax DWR according to the brand which made my jacket. I have let this wear off and won't be renewing it as Ventile needs to absorb water in order to work. In prolonged heavy rain one won't be totally dry in either a Páramo or a Ventile garment but, having owned both I've sold ALL my Páramo stuff and am now solely using double Ventile without any unnecessary DWR. I also no longer own or want any Goretex or similar garments.
@AX-fx7ng
@AX-fx7ng 10 күн бұрын
Missed your videos :0
@BenVallack
@BenVallack 10 күн бұрын
Releasing weekly again now 😀Friday at 6pm UK time.
@max_pin
@max_pin 12 күн бұрын
I'm not having much luck getting one of these shipped to the US. I'm surprised that they don't seem to have a US distributor.
@BenVallack
@BenVallack 12 күн бұрын
Yeah I did wonder if they'd be hard to get over there. Maybe just a question of getting enough demand to make it worth soreone's while getting a bunch imported.
@Busterblade20
@Busterblade20 11 күн бұрын
​​@@BenVallackNor they shipped to Colombia. Which comes to me as a surprise given that their coats are made in Colombia and the name Paramo is pretty much inspired by Colombia's Páramos.
@BenVallack
@BenVallack 11 күн бұрын
Ah yeah that's really frustating isn't it!
@redesignedlife777
@redesignedlife777 11 күн бұрын
it's only popular in certain regions. USA has too many big brands to the point where many other brands have a hard time getting a piece of the pie. Even Mountain Equipment brand is hard to find in usa.
@bogorad
@bogorad 11 күн бұрын
Some of their distributors ship to the US with no problem.
@photooutdoor2574
@photooutdoor2574 2 күн бұрын
I have two Paramo Jackets and I love to use them in Temperatures under 12°C. I wish they would make an ultralight version for warmer conditions.
@BenVallack
@BenVallack 2 күн бұрын
Yeah they are warm - I guess when you mimic animal fur that's going to be a bit of an issue!
@purplelord8531
@purplelord8531 12 күн бұрын
as someone who doesn't sweat all that much, I actually find that a combination of an umbrella and a waterproof (like an old rubbery raincoat) jacket are best - I hope people consider this, because these options seem to be dwindling. Even my 'vintage brand' coat uses this material mostly for aesthetics, as the chain is not properly sealed and the hood does not protect the face. Your skin is not meant to be completely dry in any case - rain is uncomfortable because it is cold afaik. For everyday use (not wearing for a full day/intense activity regularly) I believe the old style of coat is the best. the maintenance factor is really the thing that drives me away from these coats - to hear that I will have to reapply the water repellant is frustrating. I do wish I could find that style of hood on other coats though!
@BenVallack
@BenVallack 12 күн бұрын
Yeah I do think there is mileage in this kind of idea. I actually got a waxed cotton Barbour based on this idea. It was ok in a lot of situations but the fabric randomly tore just after the warranty expired so I've turned my back on them now!
@Yamatification
@Yamatification 9 күн бұрын
Australian and New Zealand armies which both operate in native and pacific rainforests, both use tactical umbrellas. Basically camouflaged short umbrellas as quick position rain cover or cover when on marches where sweat makes raincoats pointless
@nonsequitor
@nonsequitor 3 күн бұрын
Great points but... like.... Teflon: it's all Teflon: Gore Tex and all the other identical products are made of PFAS. Paramo used to be too, not anymore though. Nikwax is clear too. Blows my mind people still talk about these brands as if leisurewear performance is what counts here. The Gore Tex name should be cursed right now.
@sdnalyam
@sdnalyam 3 күн бұрын
It all depends on the temperature and humidity. Example in jungle conditions only ponchos work. In warm conditions a combination of a windshell and Polartech Alpha direct works very well. If hiking , rucking hard then using a mesh base layer, Polartech Alpha direct and windshell with a synthetic puffy, used like a belay. jacket, over everything when static works very well. Natick Labs etc has done a lot of research into this as well as Mark Twight, read the book Extreme Alpinism.
@MexieMex
@MexieMex 11 күн бұрын
How often do you need to reapply the coating, and what's the cost to do that?
@BenVallack
@BenVallack 11 күн бұрын
Depends really how much you use it - I'm actually not out in the rain that much so I get away with probably once a year. If I was wearing them more though I'd be happy doing at 2 or 3 times per year. It's about £3 per treatment if you use the Tech Wash to wash first then the TX Direct after.
@MexieMex
@MexieMex 11 күн бұрын
@@BenVallack thanks
@peetsnort
@peetsnort 13 сағат бұрын
The only way is to use a soft fabric thats bendable. Then get the roof tile method of lots of fabric panels sewn on . This obviously will work best standing upright. But at least its breathable when working or hiking.YET if you are at rest the tilies will rest downwards and shed the water Edit. I forgot to mention a waxing or lanolin wipe on occasionally when dry.like preening
@zmuzzy101
@zmuzzy101 8 күн бұрын
I love my shakedry jacket for cycling and haven't found anything better or even comparable but I coulf be swayed towards paramo for hiking where getting so hot isnt as big a factor and lightness is the main downside for me. My current hiking raincoat is a non breathable single skin jacket by frogg toggs called the Xtreme Light. Its brilliant as an extremely lightweight emergency rain protection and is like a much less breathable shake dry.
@BenVallack
@BenVallack 8 күн бұрын
Yeah Shakedry is very cool. I think the Paramo and Shakdry combo is a versatile pair. I sold all the old coats I had hanging around to justify the Helki so I'm left with the Paramo, Shakedry and a down jacket (the black one seen in some of the vids I did recently, it was about £20 on Vinted!). The issue with the down jacket is we often have wet and cold weather in the UK so I think I'd like to get the Paramo insulator that is designed to be worn over the top of the normal paramo and it doesn't matter if it gets wet.
@ianrobertson1667
@ianrobertson1667 9 күн бұрын
Weight is a really important consideration for hikers, runners etc. How does the weight of the Analogy technology compare to Gore-Tex?? My hunch is they are super heavy?
@BenVallack
@BenVallack 9 күн бұрын
They have some quite light ones actually these days - the Velez is 600g. It's definitely a bit heavier though - but than means it's better at insulating in colder temps too (but of course that could be a negative in warmer temps too).
@seekyeefirstforsound
@seekyeefirstforsound 4 күн бұрын
Was looking at buying one but realised it doesn’t ship to Singapore. Would love to get one if possible.
@aatj
@aatj 10 күн бұрын
Have you tried waxed cotton clothing for outdoor waterproofing?
@BenVallack
@BenVallack 10 күн бұрын
I did try a Barbour. It tore just after the warranty expired so that was that! Also I would say it's as breathable as a plastic bag even when not raining!
@aatj
@aatj 10 күн бұрын
@@BenVallack Right: I use a waxed cotton brimmed hat, but that's the extent of it. I'll try one of these coats,
@danceswithbadgers
@danceswithbadgers 6 күн бұрын
​​@@BenVallackI agree, waxed cotton jackets are sweat factories! I have a nice waxed fedora by Failsworth and a couple of their waxed cotton flat caps, and some waxed cotton gaiters to protect my Ventile trousers from damage but that's it for my waxed cotton gear these days.
@rpenm
@rpenm 6 күн бұрын
I've wondered for years why Paramo doesn't sell to the US market and why Nikwax doesn't sell Analogy fabric to US outdoor gear brands.
@BenVallack
@BenVallack 6 күн бұрын
Yeah I think they're actually quite a small company and maybe they're at the point that to do that would mean new factories etc that they just don't want to get involved with (just my assessment, I might be totally wrong).
@dosgos
@dosgos 9 күн бұрын
Over time, all of my winter jackets seemed to lose their ability to repel water. I suspect that is because a waterproof spray coating fails over time with washing and exposure to rain. The "breathable membrane" material doesn't seem to fail. Nonetheless, the jackets become sopping messes. Not 100% sure what was happening.
@BenVallack
@BenVallack 9 күн бұрын
Yeah the impact of face fabric DWR failing seems to be pretty serious. I do wonder if it's things like seems and de-lamination that goes on as well. The problem with the membrane approach is that a single failure anywhere on the jacket can have a pretty serious impact!
@AtomToast
@AtomToast 5 күн бұрын
With the thin goretex coat, I remember you mentioning how bad of an idea a backpack would be. I assume these have no problem with that?
@BenVallack
@BenVallack 5 күн бұрын
In terms of durability these will be fine, but there is the potential for water to squeezed through under the straps. How much of an issue that is I'm not really sure as I don't do much backpacking!
@HealthyHomeGuide
@HealthyHomeGuide 4 күн бұрын
Does anyone know of any brands available in the US that use NikWax Analogy fabric?
@Dogo.R
@Dogo.R 12 күн бұрын
See the fortnine video comparing waterproofing materials for breathability and waterproofing. I prefer d-dry based on that test suite. Edit after watching the video: Yah I get the desire to have tests that allow active pumping materials be able to be tested. Though to be fair if we really want the best performance we would wear ponchos with very large baffles that allow us to turn away from the rain and lift them to release the hot air every now and then. But that results in an insanely unfashionable thing, at least in most current cultures. As for what that poncho should be made of I beleive much more in full membrains than active pumping since a poncho with baffles overlaps heavily with the problems active pumping helps mitigate, yet is way better at them. Vs the problem of heavy hard wind and rain which active pumping is weak to and membranes are alot better at.
@BenVallack
@BenVallack 12 күн бұрын
Yeah he's just doing the same kind of test on them that the manufacturers do. I.e testing waterproofness in a situation unlike any kind of real life environment (we don't need pressure resitance) and then testing breathability when it's not actually raining. My next video looks at this issue in more detail but these tests don't represent comfort in the rain at all. They are good for testing breathability when it's not raining though which is not insignificant, especially for situations like biking gear so it's still useful but I'm coming at it from a different direction. In fact motorbikes might be one of the few situations where waterproofness under pressure might be a useful metric!
@inevespace
@inevespace 11 күн бұрын
@@BenVallack rain with wind is common. Static pressure test looks suitable for such scenario (30mph wind is not something extraordinary). Also an important aspect demonstrated by this test is how you feel when seat on a wet surface.
@BenVallack
@BenVallack 11 күн бұрын
@@inevespace I don't think wind in a real life situation would ever force liquid into the material much though, it will just blow it away because it isn't held in a fixed volume. Sitting on a wet surface is definitaley relevant though and absolutely one of Paramo's weaknesses!
@GmailNexus
@GmailNexus 11 күн бұрын
I think the pressure gets important once you plan on wearing a Backpack above the jacket
@davemitas
@davemitas 9 күн бұрын
Yep Nexus.
@Ian..
@Ian.. 11 күн бұрын
I’m a fan of ventile fabric. No chemical coating required.
@BenVallack
@BenVallack 11 күн бұрын
Someone else commented that this comes with a DWR from the factory these days - would like to get the bottom of that.
@danceswithbadgers
@danceswithbadgers 6 күн бұрын
​@@BenVallackThey treat the fabric because consumers expect water to bead off but Ventile doesn't need it and IME works better if you let the DWR wear off. There weren't any such chemical treatments around when Ventile was developed and they actually degrade the performance in persistent rain.
@74357175
@74357175 6 күн бұрын
Does this mean you can't wear them while wearing a backpack/gear? I.e. it will wet out at points of contact?
@BenVallack
@BenVallack 6 күн бұрын
I think that is a common complaint - but a lot of their coats have reinforced shoulders to resist this as much as possible.
@peterk9337
@peterk9337 3 күн бұрын
The jacket he is talking about, retails on the website for $450, must of just missed that point. You get what you pay for. A lot of people can’t afford that.
@BenVallack
@BenVallack 3 күн бұрын
That sounds way off - I paid £240 for mine. Definitely not unusual for decent outdoor gear and especially reasonable value for something that lasts over 20 years.
@greggie111
@greggie111 4 күн бұрын
If Nikwax is the secret sauce, can I just get a can of that, spray it on any old rain shell and get the same result?
@BenVallack
@BenVallack 4 күн бұрын
The inner layer material is actually the bit that does the work. It's called the 'pump liner'. It's construction does something clever when the fibres become hydrophobic.It's not just a case of making the outer face fabric resist the water (which is what dwr does on goretex coats and isn't enough to make the coat water proof).
@roaduser6438
@roaduser6438 Күн бұрын
I've used nikwax today put a DWR finish on a Berghaus Fleece. Pretty damn effective in light rain.
@lesleywillis6177
@lesleywillis6177 3 күн бұрын
I’m new to this sort of thing. I think a fully waterproof poncho is probably better than all of these materials. It keeps out 100% of the water and ventilates fro below. If you do get a bit hot you can swish it out. Comments please?
@BenVallack
@BenVallack 3 күн бұрын
Agree in principle but haven't tried one - downsides are style and behaviour in wind I think!
@lesleywillis6177
@lesleywillis6177 2 күн бұрын
@@BenVallack I agree about the wind but you obviously don’t know me if you mention style!😂.
@KNURKonesur
@KNURKonesur 9 күн бұрын
How does that compare to a Buffalo with Pertex?
@BenVallack
@BenVallack 9 күн бұрын
I think they are more for really cold and wet situations. They keep you warm even when wet, and are designed to be worn next to skin. I don't think they claim to have any directional behaviour. Less practical as an everyday coat if you have to be naked under it!
@jadam42
@jadam42 11 күн бұрын
So do their coats not use PFAS chemicals?
@jadam42
@jadam42 11 күн бұрын
Nm, you answered at the end of the video.
@BenVallack
@BenVallack 11 күн бұрын
Thanks for watching to the end!
@fastandcurious
@fastandcurious 11 күн бұрын
Mmh, I love the textile tech, but... they are really expensive and they don't have any sizes larger than XXL
@BenVallack
@BenVallack 11 күн бұрын
Cheap compared to Gore-tex gear!
@AndrewHelgeCox
@AndrewHelgeCox 3 күн бұрын
Are there any animal products in the nikwax coating?
@BenVallack
@BenVallack 3 күн бұрын
Not that I've ever heard of.
@AndrewHelgeCox
@AndrewHelgeCox 3 күн бұрын
@@BenVallack I can check for myself I guess
@arpsiispra3882
@arpsiispra3882 4 күн бұрын
They don't tell you what's in their care products, and what their clothes are made of. A lot of claims (sustainability and performance) and patented names for things, but very little real information on their site. I like their products and ideas, but being so "secretive" doesn't look good. I hope they can be more transparent
@BenVallack
@BenVallack 4 күн бұрын
They say it's biodegradable and it's a polymer. www.nikwax.com/en-us/how-nikwax-works/ I think the fabric is just polyester.
@iwantagoodnameplease
@iwantagoodnameplease 2 күн бұрын
£270 for a coat?!
@macjim
@macjim 4 күн бұрын
With gor-tex you’re paying for the name… you can get wet while wearing a gore-tex jacket due to sweat.
@avancalledrupert5130
@avancalledrupert5130 Күн бұрын
Its to thick and warm. A rain coat has to provide zero insulation or you cant ware it over 10c without over heating.
@BenVallack
@BenVallack Күн бұрын
Yeah that is the issue in the summer - generally in England it's usually cold though so works pretty well!
@petergoodall6258
@petergoodall6258 9 күн бұрын
Cost more than my car
@BenVallack
@BenVallack 9 күн бұрын
Wait until you see the price of Gore-Tex! The Helki cost me £240 and I expect it to perform well for 20 years.
@tim.w5630
@tim.w5630 9 күн бұрын
Thats for shure a real problem. Especially considering that you cannot wear it year round, because it's quite a warm jacket, the price is really steep. But I think my for my usecase it was worth it. Your mileage may vary
@jonabub
@jonabub 8 күн бұрын
"That means, the air inside the coat can never be dryer than the air outside the coat" is utter bs since it completely neglects the temperature differential. since your body always produces heat, this heat can be used to dry the air within the coat even in high humidity conditions outside the coat, as long as there is a temperature differential. This is famously put into effect in ecwcs gen 3 suits but known by anybody in rainy countries such as UK or Ireland who heats up their home in order to drive off humidity that could cause mold.
@BenVallack
@BenVallack 8 күн бұрын
To dry out the inside the vapour needs to leave the coat. You're correct in that a temperature difference will make the moisture want to leave the membrane - but the problem is if the air is 100% RH on the cooler air outside - it will turn to liquid as it tries to leave when it hits the cooler membrane. Some might still escape and turn to condensation on the outside of course so this is a simplified argument - but as far as I can see if the temperature is equal then you won't get any transfer (no vapour pressure gradient) but if the temperature is different you will get the vapour pressure gradient but then you get condensation! The situation I'm talking about is only when it's actually raining and the outside air is at 100% RH. If the air is dryer then it can accept the leaving vapour without it condensing.
@BenVallack
@BenVallack 8 күн бұрын
Heating your house prevents condensation on walls, it doesn't make the air any 'dryer'. It technically reduces the relative humidity due hotter air being able to hold more moisture in the air - but that same moisture is still in the air. Warmer walls means less condensation and warmer air means a higher dew point. That's why you get less mould when warming the house - if I understand it all correctly! To remove moisture from the air, those vapour molecules have to go somewhere.
@jonabub
@jonabub 8 күн бұрын
​@@BenVallack It's a great argument, i have to admit. And i suppose it would largely depend on your defenition of "dryer". Since hot air with the same amount of vapour would still have a lower saturation than cold air, i.e. feel dryer and be able to absorb more additional humidity from sweat a.s.o.
@jonabub
@jonabub 8 күн бұрын
@@BenVallack Yes, if the saturation is at 100% outside and if this is accompanied by a temperature differential the vapour from inside will tend to condensate outside. But since the vapour needs to cool down first this will not necessarily be immediate. Also whether the vapour has to be driven off through a membrane or just pushed out with movement and replaced with less humid air that then heats up is depending on the structure of the clothing or isolation. I tend to prefer "fluffier" and more open clothing such as a fleece for that matter since it allows for good air flow. Although windy conditions would make a combination with a less breathable and more air tight fabric necessary. In windy conditions in turn there is almost never a 100% saturation and the vapour would be dispersed before it gets to condensate. I suppose since we are looking for dry feeling rather than saturation levels the best clothing is a function of temperature gradient as well as breathability. Gor Tex is bad at both and only marketing. Ecwcs and similar systems work best for me but i think paramo fits in there somewhere.
@jonabub
@jonabub 8 күн бұрын
@@BenVallack Anyway, great brain tease for this time of day. Was fun negotiating that. Thanks for this.
@gelopza
@gelopza 3 күн бұрын
Dry T-shirt, wet pants…
@janmagtoast
@janmagtoast 12 күн бұрын
You don't have to excuse your dog. I like the rustling!
@BenVallack
@BenVallack 12 күн бұрын
Heh!
@janmagtoast
@janmagtoast 12 күн бұрын
@@BenVallack On a sidenote. Since you're very interested in keyboards. Have you heard of CharaChorder, yet? They're a company who're trying to reinvent the wheel when it comes to typing/interacting with computers (similar to DataHand, if you've seen that before, but with some really interesting new twists). Thought it might be cool to share that this existed, in case you haven't seen it yet.
@peetsnort
@peetsnort 13 сағат бұрын
Water off a ducks back.
@Peak_Stone
@Peak_Stone 12 күн бұрын
fifth
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