The newly refined Maestrale RS is SCARPA's most powerful alpine touring boot, engineered for expert backcountry skiers who refuse to sacrifice descent performance for uphill efficiency. Built on a 101mm last with a Grilamid® shell and Pebax® Rnew® cuff, it delivers a 130 Flex stiffness profile that drives hard-charging turns with the authority of an alpine boot, while the Speed Lock 4 walk mechanism unlocks a full range of motion for long, demanding ascents. The redesigned four-buckle closure with Booster® Active Power Strap wraps the foot in a uniform, high-tension hold that eliminates micro-movement and maximizes energy transfer in every condition. Compatible with both Tech and AT bindings, the Maestrale RS is the boot for skiers who push hard in both directions.