The Apex ski boot offers an alternative to the typical four-buckle ski boot design. The walking boot has a Boa Lace system that allows infinite adjustments to tighten or loosen the fit around the foot. The walking boot can also be removed from the carbon chassis and used to walk around the resort during lunch. (You could even leave your shoes at home and wear the walking boot to the resort). The chassis is made out of hi mod carbon resulting in very lightweight and great performance even though the foot is not completely wrapped in a traditional shell. Carbon fiber typically does not flex, however Apex has developed the "A Flex" Suspension System that allows for individual adjustment of the forward flex. All these features result in the easiest boot to get on and off we have ever carried. It works great for the skier who is tired of the traditional boot and is looking for comfort and warmth without sacrificing performance. It will fit a wide range of foot shapes and works best for the intermediate to the advanced skier.