The SPX 14 Konect GripWalk(R) binding is a high-performance integrated binding system for aggressive skiers. The combination of a Full Action toe piece and SPX heel deliver the longest elastic travel on the market for unmatched shock absorption. The result is instant power transmission and precise control with superior shock absorption to reduce unwanted pre-release. It's compatible with traditional Alpine ISO 5355 A and GripWalk(R) ISO 23223 A boot soles. It fits boot soles from 260-375mm in length.