These NEOS 15" Adventurer All Season Waterproof Overshoes have a 500 denier nylon upper with a waterproof membrane for weather protection and an extra wide opening gusset for easy on and off. They feature an adjustable hook and loop closure system for a secure fit and a snow shoe compatible heel. The slip-resistant Perma outsole provides traction, and the lightweight, compact design allows for easy storage. An optional 10mm removable EVA insole is sold separately.