K2’s pro-athlete level freeride boot is a refreshing no-holds ... it sports two BOAs - one on the lower shell and one at the top of the Intuition PowerFit Wrap liner. The shell BOA works the same as ...
On the rear end of the shell sits what K2 calls its Powerfuse Spyne, a rigid Y-shaped support that stiffens the boot laterally. Inside is a fully heat-moldable Intuition Power Fit Wrap BOA Liner.