Freeride ski boots all mountain ski boots suitable for men season 2016 skill levels expert advanced last 100106 mm widths narrow average wide flex index 110 flex medium special features adjustable foot width thermoformable shell ski walk mechanism lining features thermoformable boot liner breathable outer materials polyurethane polypropylene colour black fasteners buckle fastener velcro buckle 3 x micro adjustable aluminium buckles strap 50mm v