Designed with input from Tecnica's Women2Women program, the Mach1 MV 105 W is a performance-driven ski boot specifically designed for strong female skiers with a mid-volume, average-shaped foot. A women's specific anatomical liner and shell provides a great, comfortable out-of-the-box fit. If needed, you can add personal customization with Tecnica's C.A.S. system to solve any additional fit problems. Merino wool and Celliant combine in the liner for increased warmth, while the C.A.S. Cuff Adapt System effectively and easily adjusts the volume to fit a variety of lower leg shapes. The Women's Natural Stance puts you in the perfect balanced position and the Asymmetric Shell Design allows you to tap into all the energy and power of the ski. A flex rating of 105 gives you the support you need to confidently ski all over the mountain with control and stability. Get out there and shred, ladies. C.A.S. Caff Adapt effectively and easily adjusts the volume to fit a variety of lower leg shapes C.A.S. Shell has an anatomical shape for great out-of-the box fit and easy customization C.A.S. Liner is anatomically shaped for optimal comfort and offers great heel hold Celliant liner is powered by 13 thermoreactive minerals that convert body heat into infrared energy for improved warmth, performance, thermal regulation and faster recovery Lift Lock Buckles keep the buckles out of the way for easy entry and exit Quick Instep utilizes softer plastic over the instep area that allows the shell to open easier as you are entering or exiting the boot