Material:NylonWashing Instructions:Hand Wash Only PLEASE Mind the Size Chart and Choose the RIGHT Size Before Buying!Keep Dry Chest Waders was made of upgraded next generation nylon with two-ply waterproof fabric. Laboratory approved this next generation nylon fabrics feature a knitting density performance, it is about 2.5 times higher than common nylon in every square inch. Next generation nylon PVC upper with waterproof boot attachment and visible taped seams, we are so sure the Water Intrusion Resistance processing will help prevent water and dirt from getting into wader.