Catch some air on the Hydroslide Cyclone Kneeboard! The Cyclone features a patented thin profile design and deep knee wells. Hydroslide's patented Hydrohook is perfect for anyone from beginners to more seasoned riders and helps you easily get up the first time. The Cyclone includes a 3" padded knee strap. Designed for kneeboarders up to 120 lbs. 43"L x 20"W.