Built to accommodate park to peak terrain, the K2 Sonic is the binding getting you through the crud and on the rails without hesitation. The Sonic packs more punch at a price you can afford with K2's new Fusion Base, built for quick adjustment and forgiving flex, a Cored Ergo Highback with VFL for dialing in the precise fit and Universal Toe Straps, so you can choose whether to rock it over the top or toe. Key Features of the K2 Sonic Snowboard Bindings: Fusion Base - Precise boot-to-binding fit, tool-free lean adjust, and tight board feel. Lightweight & durable design and forgiving flex enhances mobility without sacrificing stability and response. Cored Ergo Highback - Lightweight, full height lean block, tool-less forward lean lever and block Virtual Forward Lean (VFL) - Allows the highback to rotate about a 'virtual' pivot axis, eliminating heel gapping between boot and binding for a more precise fit. Standard Caddy ankle strap - 3D shaping and cush materials offer forgiving comfort