A one-way valve that automatically releases air as the bag is rolled down to condense loads without letting water in. Waterproof up to 3 psi. A tough, light-weight fabric that provides durability without extra weight. This allows us to make truly waterproof gear without needle holes, which allow for leaks. Nylon is lightweight and slides easily in a kayak.
Urethane is a durable, waterproof coating that allows for radio-frequency seam welding.
Vinyl is UV and cold resistant, very durable and waterproof.