These 100% waterproof stretchable waders are made of a 3-ply Nylon jersey/rubber material which has test-proven superiority over canvas, rubber or nylon for abrasion resistance! Other features include reinforced knee pads, large inside pocket for extra storage, belt loops, inside drawstring for snug fit, ozone-resistant special rubber compounding to avoid cracking and deterioration, and cleated outsole for super traction. Insulated with 200 grams of Thinsulate™.