The HO Sports Proton Kneeboard featuring Powerlock's single locking knee strap, provides maximum comfort and ease. This kneeboard has a surf inspired shape and deep tracking channels to make wake cuts and landing super smooth. Its retractable fin system allows for aggressive control with fins up, or easy surface turns and hydro sliding with fins down. It has been built with an easy up hook that makes deep water starts a breeze for all rider skill levels. Have fun with the HO Sports Proton Kneeboard!