DESIGN: 100% waterproof material and construction Neoprene coverage for enhanced comfort and performance Heel pull tab or easy on and off IN-SHOE COMFORT: Fleece lining wrapped in layers of soft rubber so your feet will stay warm and dry in the most extreme conditions bioDEWIX(R) footbed insert topcover with NZYM(R) for odor control and moisture management Lightweight midsole for all day comfort and support TRACTION & DURABILITY: Arctic Grip A.T.(R) with XS Trek Evo(R) for advanced traction on all terrains including wet ice, snow, mixed/loose surfaces and hard pack