Atomic Redster STR 1 LCThe Atomic Redster STR 1 LC is Atomics most flexible race boot for junior racers, with a 70 flex and a lower cuff height sized for shorter legs. The 91mm Narrow Racing Last and sizing down to a Mondo Point 21, with appropriate liner construction, makes this boot custom designed for younger athletes. A pliable polyurethane (PU) plastic shell and cuff material, paired with thin yet powerful STR Wall Thickness, are meant to provide an easy to handle