All mountain ski boots suitable for men season 2016 skill level advanced last 102 mm width wide flex index 90 flex medium special features with canting high thermal insulation ski walk mechanism removable toe and heel pads walk to ride wtr compatible outer material polyurethane colours black green fasteners buckle fastener velcro buckle 4 x micro adjustable aluminium buckles strap 40mm velcro strap inner material thinsulate liner optisensor t4