Asymmetrical Stitched Ankle Strap is made from multi-density 3D padding and formed EVA. The injected polycarbonate Spectrum™ Chassis is lightweight and features a stance correct heel cup. Slimeback™ Highback delivers a smooth ride while providing fluid support. NEW! Linkage Ratchets provide smooth entry and exit. The KX is designed for beginner to intermediate riders looking for a binding that will allow for freestyle progression.