The HO Sports RAD+ Towable Tube '16 stands for Round Aquatic Device that features endless riding possibilities. The Drop Stitch construction is an amazing material that allows HO Sports to build inflatable items that can be inflated to optimum rigidity while delivering the most durable inflatables they've ever offered. The machined EVA Traction Pad features unsurpassed foot grip where you'll be able to kneel, lay, stand, sit and other multiple riding options. Also features a Handle Hook for Hands free starts and riding. The nylon handle is for steering when the handle is docked in the handle hook.