K2’s stiffest women-specific boot in an entirely new line of models, the SpYre 110 suits aggressive skiers seeking the ease and mobility of a walk mode. The new boot features rivet-free Energy Interlock and Y-shaped PowerFuse SpYne technology, designed to flex smoothly while in downhill mode and move freely in touring mode. The SpYre 110 also comes with padded and grippy soles that are replaceable as well as a PrecisionFit Intuition liner.