The NRS Tuff Sack features the innovative StormStrip system. This .35-mm vinyl closure ensures you're getting the most waterproof bag of its kind. A heavy 1000-denier 18-oz. body and 34-oz. PVC/polyester bottom combine to create a bag that will last you for years to come.
Just what I needed. First dry sack and it did not disappoint.
Not tested in water. Hope not to.