The K2 Sonic Snowboard Bindings are K2&';s entry level snowboard binding. They&';re built to be extra flexible and extra durable with an eye towards easy progression and longevity. They&';re full featured bindings that will give you everything you need and more, from fully tool-free adjustability to bomber straps, highbacks, and buckles. Strap into the Sonic and get yourself out on the hill. Skill Level: Beginner-Intermediate Best Use: All Mountain Binding Type: Strap Flex: Soft Channel Compatible: Yes Baseplate: GF ProFusion Chassis Highback: AT PC Highback Straps: P.I. Ankle Strap (Perfect Fit 2.0 Toe Straps)