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 And Back Rehabilitation. HIGH QUALITY & NON-TOXIC : Our small exercise balls are made from professional grade PVC materials that are eco-friendly ,nontoxic. They will not produce harmful smell and is safe for human especially pregnant women. ANTI-SLIP & ANTI-BURST The mini balance balls are made from high quality PVC material and an anti-burst, non-slip coating that is able to stand up to the most rigorous workouts. It will slowly leak if punctured and the ball will not explode, protecting your safety. EASY TO INFLATE AND STORE: It can be quickly inflated with a straw and a plug which come with the ball, pump not required. And a mini diameter makes the ball convenient to carry and store. You can take it to the gym/travel/training at will.