Muck Footwear Men APEX PRO VIBRAM ARCTIC GRIP ALL TERRAIN 。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. 100% Waterproof Breathable mesh lining facilitates air circulation to improve comfort and reduce heat and moisture Dual density comfort footbed with memory foam for long lasting cushioning Extended rubber coverage for added protection Combining Vibram\'s All-New Arctic Grip All Terrain outsole with XS Trek Evo compound and their New Traction Lug Technology for added durability and grip on wet and dry surfaces; providing improved traction on loose terrain. Pull-tab for easy on and off Estimated height: 12 in. / 30 cm Estimated max calf circumference: 17 in. / 43 cm Comfort Range: -20°F to 50°F / -30°C to 10°C Note: These are likely a return, they appear in good unworn condition and have tags attached. Please see pictures for further detail. Internal ID #137