All of Dryshod footwear is made with high density dry-suit grade Densoprene foam. Densoprene is naturally waterproof, and keeps the cold out and the warm in. This boot is equipped with and medium grip traction tread, which provides you good traction but does not hold lots of mud in the tread like super aggressive treads do. The chaps on these boots is our Stone Creek chaps which are well known for the best quality and most durable chaps on the market. These waders are totally waterproof you can cross streams with confidence that you will stay dry. If you do not see the size you need contact us we can get it for you.