Alpine ski boots suitable for men season 2016 skill levels advanced expert last 100 mm width average flex index 110 flex hard special features straps on boot liner rear high thermal insulation walk to ride wtr compatible adjustable flex with canting lining features anatomically mouldable boot liner outer material polyurethane colour black fasteners buckle fastener velcro buckle 4 x micro adjustable aluminium buckles strap 50mm velcro strap inne