Features: Soft-flexing, lightweight design ideal for young beginners Single, mitten-friendly buckle and strap for easy entry and exit Kid-friendly setup that promotes independent strapping and riding Smooth, forgiving flex for a comfortable learning curve Technology: Smack-It ratchet system for simple, oversized buckle operation Bomb-Proof polycarbonate baseplate for durability Grom Hi-Back designed specifically for small riders Onestrap(R) ankle strap for quick, secure fastening SPECS: Mounting System: Disc Baseplate Material: Bomb-Proof Polycarbonate Ankle Strap: Onestrap(R) Buckle: Smack-It Ratchet Hi-Back: Grom Hi-Back Compatibility: Disc mounting system works with all major mounting systems