Burton Grom Snowboard Bindings Kids BASEPLATE: Single-Component Lightweight, Bomb-Proof Polycarbonate HI-BACK: Ultra-Lightweight Single-Component Grom Hi-Back RESPONSE: 2 - 5 (Plush - Medium) STRAPS / BUCKLES: Onestrap with Smack-It Ratchet Smooth Glide Buckles Compatible with all Major Mounting Systems