<!--ProdInc[300273253]/Mall:[backcountry_US]-->When it''s so cold that our coffee could freeze in mid-air, we know it''s time to bust out our Korkers Polar Vortex 1200 Boots. With a comfort rating down to -60F, they''re crammed with a whopping 1200 grams of Thinsulate to hold in every bit of our body heat and keep out the coffee-freezing temps. The waterproof leather and waterproof membrane lock out moisture, while the Boa system locks in our perfect fit, so we can go outside and play in arctic conditions without worrying about frostbite and cold feet. On top of all that, we can adjust our traction on the fly with the Omnitrax interchangeable sole system, which lets us switch to other Omnitrax outsoles (sold separately) to match our tread to changing terrain and weather conditions. <h3>Details</h3> Winter boots for extremely cold temperatures 3M Thinsulate provides extreme warmth 6-layer Thermal Stack blocks out cold underfoot 11in height protects against deep snow Waterproof leather and waterproof membrane keep out moisture Interchangeable Sole System can add soles with studded traction 1 Snowtrac rubber lug sole included (others sold separately) Whole sizes only?size up for wide feet or half-sizes Item #KKRM01X <h3>Tech Specs</h3> Upper Material : leather Waterproofing : bootie Insulation : 1200g 3M Thinsulate Removable Liner : no Temperature Rating : -60F Closure : Boa M4 Fit System Footbed : aerogel frost barrier Midsole : EVA Sole : interchangeable, Snowtrac rubber included Shaft Height : 11in Claimed Weight : [single] 2lb 2oz Manufacturer Warranty : 1 year Activity : casual