Heavy duty anti-burst rating can match any heavyweight: Our Exercise Ball is manufactured using gym quality standards.

• Extra thick and anti-burst: one of the highest density exercise balls in the market.When used properly, it can carry the stress of heavy loads without popping to prevent you from being injured.
• Packed with non-toxic PVC material, our stability balls have a thick surface which delivers a greater degree of resistance to sharp objects on the floor or on your clothing that may come in contact with the ball.
• Durable enough to be used every day as an exercise ball chair at the office to improve your posture.
• NON-SLIP RIBBED BODY STAYS PUT WITH SKIN CONTACT: The PVC body has a matte surface -- making it easy to hold without slipping while tossing, bouncing or squeezing the ball even with profuse sweat.
• FOUR SIZE OPTIONS FOR YOUR COMFORT AND SAFETY: 55cm, 65cm, 75cm and 85 cm.