Designed with input from our Women2Women program, the Mach 1 HV 105 W is a high-performance ski boot specifically designed for strong female skiers who need just a touch more forgiveness than the 115 offers. Fit is priority number one and an anatomically shaped 103mm high volume shell and a women's specific liner with Custom Adaptive Shape - C.A.S. - technology, provides a great fit right out of the box.Â