O'Brien Radica Kneeboard w/ HookThe O'Brien Radica Kneeboard features wakeboard-styled quad molded fins, making edging and carving a breeze while allowing release for spin-type tricks. The water-ski influenced edge bevel helps the board sit low in the water for stability and allows quick edge to edge transitions. Roto molded, this O'Brien kneeboard is buoyant, durable, and easy to learn on. The integrated aquatic hook makes it easy to get up the first time every time.Features: Padded adjustable strap; Roto-Molded Construction; Integrated hook; 3/4" EVA pad; Variable beveled edge; (4) Quad molded fins;