A NEW LEVEL OF TRACTION TECHNOLOGY.The new Vibram Arctic Grip All Terrain outsole with Vibram XS Trek Evo compound and New Traction Lug Technology provides advanced traction on all terrains including wet ice snow mixed/loose surfaces and hard pack; superior grip no matter the season. The Apex Pro is built for high endurance cool and cold weather pursuits or treks that require a more athletic and agile boot. 100% waterproof with strategically placed rubber overlays that provide additional protection along the shin and forefoot without adding unnecessary weight. Muck Footwear Men's Apex Pro Vibram Arctic Grip All Terrain Apex Black M