Mini Exercise Ball with Pump - 9 Inch Bender Ball for Stability, Barre, Pilates, Yoga, Core Training and Physical Therapy HIGH QUALITY mini exercise balance ball. The ProBody Pilates Mini Exercise ball is intended for core strength, balance, back rehabilitation and for toning and sculpting with Pilates, Yoga or other fitness exercises. INCLUDES A PUMP AND ACCESS TO EXERCISE VIDEOS AND CONTENT. Anti-burst balls do not include a valve, but rather have a plug to withstand high pressure. This requires a straw for inflation, which can provide some amusement while inflating. SOFT PVC MATERIAL that is free of the six common harmful phthalates: DEHP, DBP, BBP, DINP, DIDP, and DNOP. RECOMMENDED BY TRAINERS AND PHYSICAL THERAPISTS and for good reason. Exercise balls are perfect to increase balance, core strength and flexibility. BETTER THAN MONEY BACK GUARANTEE. Made to be burst resistant. Should it burst within the first 90 days of use we will gladly refund you as well as provide a new ball.