The Atomic Redster STI 70 LC is Atomic's most flexibile race boot for teenage ski racers, but the only thing junior about this race boot is the cuff height, which has been specially sized for shorter, skinnier legs. The Slim Race shell uses a slightly thinner wall construction than the World Cup line which makes it easier to flex for lighter weight rippers. Give your children a confidence boost on race day and let them feel like they're in the big leagues with the Redster STI.  Atomic Memory Fit is one of the quickest heat-fitting technologies available. The Memolink additive improves the mouldability and stretch of the plastic used in boot construction allowing up to 6mm in forefoot expansion and 10mm in ankle expansion. All three elements of the boot can be adapted to the foot - the shell, cuff and liner - giving you a permanent and anatomical fit within minutes.  Features: Flex: 70 Last: 93mm Slim Race Shell Memory Fit Low Cuff World Cup Liner 35mm Velcro Strap 7000-Series Alu Buckle Forward lean: 16° 0° Shell rotation Colour: Red Redster STI 70 LC Ski Race Boot 2022 - Red