The new Nitro Dynasty BOA Step On combines the best of three worlds to provide the ultimate fit, precision, and convenience in a high-end all-mountain snowboard boot for those looking for the best. The legendary Nitro fit combined with the easy entry Step On system and the dialed fit of the Dual BOA Fit System creates a powerhouse of a boot that the world has never seen before! The Armored Spine, Flex Link Design, and Internal Ankle Support provide the foothold and even support to keep you charging in confidence all day long.