Features: - single person knee-board design - water-safe: floating & stable platform base - comfortable form-fitting knee slots for all ages - universal board design for children, teens & adults - marine grade water-resistant & corrosion-resistant construction - lightweight & hassle-free setup for quick water fun - used in lakes, rivers & oceans! technical specs: - construction materials: reinforced engineered polyurethane - knee-board dimensions (L x w x H): 50.0 x 20.0 x 4.5 - knee-board weight: 8.7 lbs.