Alpine ski boots all mountain ski boots suitable for men season 2017 skill level advanced last 100 mm width average flex index 80 flex medium special features with canting removable toe and heel pads lining features thermoformable boot liner outer material polyurethane colour black fasteners buckle fastener velcro buckle 4 x micro adjustable aluminium buckles strap 35mm velcro strap shoe technology twinframe liner my custom fit 3d sport series