K2 built the BFC 100 BOA to combine comfort, versatility, and a host of technologies in a boot that skis all types of terrain. The BOA Fit System evenly tightens the lower shell with a simple turn for a precise, notch-by-notch fit that sharpens feel and responsiveness while reducing pressure points. A heat-moldable CushFit Plus liner and a wide, heat-moldable MultiFit last keep things comfortable all day, while hands-free entry and GripWalk outsoles make everyday use effortless. An excellent balance of lightness, versatility, and comfort for every ski outing. Features: 100 Flex - versatile all-mountain performance for intermediate to advanced skiers BOA Fit System - precise, even lower-shell closure with micro-adjustment CushFit Plus Liner - heat-moldable, plush all-day comfort MultiFit Last (97-104 mm) - adapts to a wide variety of foot shapes Hands-Free Entry - overlapping materials for easy, no-hands entry and exit Walk Mode - added cuff mobility for walking comfort GripWalk Outsoles - confident grip when walking without sacrificing ski performance