Made for the hardcore backcountry folk who wanting to explore and get way out there, the K2 Aspect Snowboard Boots are not for those who want a daily boot to bring to the resort. Stiff, responsive, and durable, the K2 Aspect have a heavy duty Vibram Mountaineer outsole that is crampon compatible, reinforced heavily through the entire boot, and with hardware that is overbuilt to last in the terrain where you may not have a shop to help you out. These are a stiff (5/5) flex with Endo 2.0 Construction to make for the most technically advanced boot construction possible. With internal and external J bars plus cored ankle pockets, your heel will stay locked down to get ultimate comfort and response for your boots!