Racing ski boots suitable for men season 2016 skill level advanced last 95 mm width narrow flex index 130 flex hard special features adjustable flex straps on boot liner rear easy entry thermoformable shell lining features thermoformable boot liner weight 2 378 g outer material polyurethane colour red fasteners buckle fastener velcro buckle 4 x rsx 7000 buckles strap 55mm dual strap shoe technology memory fit liner world cup series atomic