Atomic REDSTER STI 70 LC Ski Boot 2025

The Atomic Redster STI 70 LC is a race boot designed specifically for young teenage racers – with a lower cuff to fit shorter legs.

While 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 Tongue System allows you to select the tongue volume that best fits your body, for a dialed connection between your shin and the boot. This is a boot that’s ready to perform on the race course. Junior racers will have tons of confidence on race day and feel like they’re in the big leagues with the Redster STI 70 LC.

Weight (g) / Boot (Size): 1,798 / 24-24.5

Gender: Unisex

Terrain: Race

Flex: Soft

Boot-binding compatibility: Alpine, Gripwalk, MNC, MN

True Size Mondopoint 22
On our women's models, we offer a true shell size in MP 22 plus an appropriate liner construction.

Full PU Construction
Both cuff and shell are made from polyurethane (PU) plastic to deliver outstanding skiing performance.

Low Cuff - All Sizes
A 15mm lower cuff on all sizes within the size range.

Racing Sole (non-replaceable)
Solid plastic sole used in World Cup racing that delievers performance, stability, and precision.