PLEASE NOTE THIS ITEM CANNOT SHIP VIA 3 DAY DELIVERY. BOSUreg Balance Trainer helps to strengthen and coordinate your body including the muscles that you don't see. BOSUreg Balance Trainer targets the core muscles of your body those muscles around your abdominal and back area helping you to not only gain strength, trim, and tone, but to help coordinate your entire body. Your BOSUreg Balance Trainer is available in blue only and comes with an inflation pump. The BOSUreg Balance Trainer is a versatile piece of equipment that is ideal for static and dynamic balance training. The BOSUreg can also be used to integrate balance challenges into cardiovascular, endurance, core and flexibility training. BOSUreg is an acronym for 'both sides up'. The BOSUreg Balance Trainer can be used with the platform side either up or down to challenge balance with different body positions.