Is it still called exercise if you have fun doing it? Technically, it is. But that doesn?t diminish how effective this Inflatable Exercise Roll from PhysioGymnic is for fitness, rehab, balance and coordination. Unsure what a Roll is? Imagine two inflated exercise balls merged together. Easier to use than traditional gym balls because most of the movement is limited to forward and backward, allowing the Roll to provide maximum stability during exercise. Additionally, the wide saddle-like seat offers additional support so users of all ages can exercise in a safe way. Like a therapy ball, The Inflatable Roll helps with balance, muscle tone and sensory stimulation. It?s also ideal for those who have coordination and balance difficulties, as well as the elderly and those that are disabled. The unique shape of the ball allows therapy with activities that might otherwise be risky on a traditional ball. Fantastic for physical therapy of the legs and feet as the Roll allows users to move at their own pace. Not to be overlooked, because it?s an Inflatable Exercise Roll, it?s also good for just having fun. This Exercise Roll has a 16? diameter and comes in Red. Please note, an air pump is not included but there is a valve to help with inflation. There?s a recommended weight capacity of 270 lbs. for the roll.