Capable of doing it all, the O'Brien Black Magic Kneeboard is the best "family" kneeboard on the water. Its famous cable-actuated retractable fin system and Aquatic Hook make the Black Magic the perfect board for successfully teaching kids and beginners the finer points of deep-water starts. Its size pairs well with adults and kids alike, and its smooth bottom contouring delivers a super stable and extremely comfortable ride for all.• Rotomolded construction is durable, buoyant, and easy to learn on• Cable-actuated retractable fins for adjusting the board's performance while riding• Integrated Aquatic Hook makes it easy to get up the first time and every time• Molded EVA pad• 3" padded strap | O'Brien Black Magic Kneeboard, Green Kneepad | The House