Atomic REDSTER STI 70 LCWhile the Redster STI 70 LC is Atomic's most flexible race boot for junior ski racers, the only thing junior about this race boot is the cuff height, specifically sized for younger legs. The Slim Race Shell makes it easier to flex than other junior ski boots. The Redster STI 70 LC has a high performance World Cup liner that creates a precise interface between shell and foot and works with the V3 Tongue System to totally fine tune your fit. The V3