Muck Boot Women's Arctic Ice 8mm Insulated Waterproof Winter Boots - The new Vibram Arctic Grip All Terrain outsole with Vibram XS Trek Evo compound provides advanced traction on all terrains including wet ice, snow, mixed/loose surfaces and hard pack; superior grip no matter the season. 100% waterproof 8mm CR Flex-Foam neoprene liner Fleece lining for additional warmth Lightweight, cushioned EVA midsole for added comfort Extended rubber coverage for added protection Comfort insole bioDEWIX antimicrobial footbed insert topcover with NZYM for odor control and moisture management Vibram Arctic Grip A.T for wet ice traction coupled with XS Trek EVO adding durability and improved grip on wet and dry surfaces Pull-tab for easy on and off Style: ASVTA