The new Atomic 4 is a modular, multi-rider towable designed for long summer days on the boat. Loaded with features and constructed from only the highest quality materials, the new Atomic 4 will keep you where you want to be...on the water. Large Boston style valves promote quick and easy inflastion and deflation, while the soft foam handles, knuckle guards, and staggered padded seating ensure you'll be riding in ultimate comfort. With its low center of gravity, the new Atomic 4 remains extremely stable in the whip and through the wake. Use the rear boarding platform to easily climb back onto the tube from the water. A unique innovative design feature of the Atomic 4 is the removable center backrest. Leave in place to rid the tube from a secure seated position, or remove to put the center rider right in the action while lying in a forward facing position.