Racing ski boots kids ski boots suitable for kids season 2016 skill level advanced width narrow flex index 90 flex hard special features straps on boot liner rear easy entry thermoformable shell lining features thermoformable boot liner weight 1 952 g outer material polyurethane colour red fasteners buckle fastener velcro buckle 4 x alu 6000 buckles strap 35mm velcro strap shoe technology memory fit liner silver series atomic redster addit