The best cornhole bags are ACL Pro Series. And among those are the ones made in San Diego, California, USA!! These are the new Ultra Cornhole Viper bags with the GripTech Control Dots in Orange. There is a badass orange and black viper snake on the slow side. You can always tell the slow side with Ultra bags, they either have the stars on them or there is no graphic design at all (because certain fabrics melt well below sublimation temperatures). The filler we use is a mix of plastic resin pellets. It is highly tuned to the desired flow, volume and mass. The Viper was the original cornhole bag to use the Control Dots. These help to increase friction on hot fast boards or reduce stiction on cold damp slow boards. They are located near the center of the bag where most of the weight is and not near the edges which can hang up the bag near the hole. This bag was the most popular bag for a reason. Get yours today at ultracornhole.com/product/viper-ultra-bags-set-of-4-bags/