The O'Brien VooDoo Kneeboard combines hard-charging runs at the wake with a forgiving ride. Quad molded fins at each corner provide extra tracking, and the curved underside makes for quick and smooth edge transitions. The 3/4" thick pad provides plush comfort for your knees and ankles, while the 3" padded strap secures you for maximum control.• Rotomolded construction is durable, buoyant, and easy to learn on• Quad molded fins enhance the boards tracking for added control• Integrated Aquatic Hook makes it easy to get up the first time and every time• 3/4" EVA pad• 3" padded strap Curved underside makes for quick & smooth edge transitions 3/4"" thick pad provides plush comfort for your knees & ankles 3"" padded strap secures you for maximum control