VERSATILE USE : The Small Fitness Balls Design Is Perfect For Yoga, Pilates, Barre, Physical Therapy Or At Home Workouts That Focus On Strengthening Your Core, Posture, Stability, Balance, Toning, Sculpting Muscles Back Rehabilitation. HIGH QUALITY and NON-TOXIC : Our small exercise balls are made from professional grade PVC materials that are eco-friendly ,nontoxic. They will not produce harmful smell is safe for human especially pregnant women. ANTI-SLIP and ANTI-BURST The mini balance balls are made from high quality PVC material an anti-burst, non-slip coating that is able to st up to the most rigorous workouts. It will slowly leak if punctured the ball will not explode, protecting your safety. EASY TO INFLATE STORE: It can be quickly inflated with a straw a plug which come with the ball, pump not required. a mini diameter makes the ball convenient to carry store. You can take it to the gym/travel/training at will.