The K2 B.F.C. W 90 and B.F.C. W 90 Heat have set the bar as one of the most comfortable, warmest, and easiest to put on/take off boots on the market. The 103mm lasted shell provides all day comfort from the moment you put the boots on in the parking lot or lockers until the last run of the day, and on through apr?s with the family and friends. The optional Thermic? heated liner keeps toes toasty on even the coldest days. The Apr?s Mode feature on the B.F.C. W 90 unlocks the upper cuff from the lower part of the shell for maximum comfort and mobility while waiting for the tram, grabbing lunch at the car, or hauling gear through the parking lot. The B.F.C. W 90 also features fully replaceable/upgradeable outsoles for added grip and increased lifespan of the boot, adding to the feature list and solidifying the B.F.C. W 90 and B.F.C. W 90 Heat as the most comfortable boot in the game.?