I haven't found a real store or a website. I geht them from other soccer balls or this one I found on Amazon

@@ball_one_de can you send me the link? Thanks

amzn.to/3yQRb1a

@@ball_one_de thank you, can I also get a link for the sewing thread too?

amzn.to/34C0tjz

Same thing I was saying

use a simple elastic glue. It's just for the protection of the thread.

Something like that amzn.to/3BXz2QY

Simple flexible contact glue like Pattex Classic

@@ball_one_de thanks

A simple one like Pattex Classic

It's no special thread. I use one that's made for the kitchen.

It's contact glue like Pattex Classic or UHU Allround

The thread is just simple thread you can find in a sewing store or at the supermarket. It's a bit tighter than normal tread for sewing machines e.g.

Because the bladder leaked air at a huge amount so it cannot be fixed in another way

@@ball_one_de I think this ball is replica. The bladders surface seems smooth but if you inflate or stretch it you can see the rubber is thinner in points or lines. Over time the weak spots will rotten or brittle or burst due to weakness. I watched this video again and the bladder seems to be stratched (rubber became thinner in lines)