All mountain ski boots freeride ski boots suitable for men season 2017 skill levels expert advanced last 102 mm widths average wide flex index 100 110 flex hard special features with canting easy entry thermoformable shell insertable spoiler adjustable foot width adjustable flex lining features thermoformable boot liner canting single canting outer material polyurethane colour black fasteners buckle fastener velcro buckle 4 x micro adjustable s