Freeride ski boots all mountain ski boots suitable for men season 2017 skill level advanced last 100106 mm widths average wide flex index 100 flex medium special features adjustable foot width thermoformable shell removable toe and heel pads ski walk mechanism lining features breathable outer materials polyurethane polypropylene colour black fasteners buckle fastener velcro buckle 3 x buckles strap 35mm velcro strap shoe technologies custom sh