DESIGNED FOR COMMITTED ALPINE SKI RACERS, THE SPX 15 ROCKERACE IS AN ELITE-LEVEL COMPETITION BINDING. The strongest retention and longest elastic travel on the market deliver instant power transfer and precise control with superior shock absorption for reduced pre-release. Its short mounting zone and semi-suspended heel enhance ski flex for more precision and control. Its only compatible with R22-plate-equipped skis and ISO 5355 A boots. Long Elastic Travel: Longer elastic travel ensures more reliable retention to keep you in when you need. LOOK bindings offer the most elastic travel (lateral and vertical) and the fastest re-centering prior to release, ensuring superior shock absorption to reduce unwanted pre-release. Rolling Control: LOOK binding components are designed to deliver industry-leading roll coupling strength (boot-to-binding interface). This ensures minimal roll before the boot engages the binding for the most efficient power transmission in skiing. Short Mounting Zone: The shortened mounting zone provides less swing weight, improved response, and a deeper, rounder, more consistent ski flex. Full Action Toe Piece: Featuring 45mm of elastic travel and 180° multi-directional release, the FULL ACTION toe piece delivers best-in-class retention and release and increased coupling strength (boot-to-binding interface) for maximum power transmission. Multi Directional Release: LOOK is the only binding brand to develop a true mechanical upward release that functions independently from the heel for the most effective 180° MULTI DIRECTIONAL RELEASE in the instance of a fall. DIN/ISO: 3.5 - 12 Weight: 1130 g 1/2 pair.