The Diablo II boat towable tube provides added stability on a unique tapered ‘D shaped tube that will give you the ride of your life! Water tube riders are kept in place with the built-in centrifugal force deterrents which provide fewer stops and less fuel consumed overall. The Skim-Fast Bottom provides a slick and fast ride also allowing the tube to plane quickly.As a contributing member of the USA-based Water Sports Industry Association (WSIA), we design and label our innovative products to adhere to the latest WSIA safety standards. We encourage our customers to be safe and follow proper precautions when using our boat towable tubes. Safety tips can be found here.