For insane shredding at any ability level, the HO Proton kneeboard delivers. The Proton has a thin profile and continuous rocker that will provide an incredible ride for beginners and advanced kneeboarders alike. Dual opt fin system allows the fin to retract for a looser feel. High performance twin tip design and hard rails give the Proton a deeper edge hold. Deep tracking channels provide stable landings. Dual density knee pad is comfortable. PowerLock single locking knee strap offers maximum comfort and ease of use.