The Head AdaptEdge 100 One features legendary comfort and performance designed specifically for women. Perfect for the advanced to expert level skier. The boot features Heads Adaptfit Technology allowing the owner of the boot to adjust the last of the boot from 104 to 102 with the turn of a screw to achieve the ultimate in fit and comfort. An adjustable flex index of 90 or 80 ensures performance in any condition on any terrain the mountain has to offer. A fur lined HeatFit liner adapts to your foot over time for added comfort and control. This is One warm, comfortable, high performance boot.