Material:PVC Color: Red, blue, purple or customized color Diameter:45cm, 55cm, 65cm, 75cm, 85cm, 95cm. Logo:As your require Certification Available:Yes Advantage:Eco-friendly, Water-proof, non-slipping, Nontoxic, Comfortable Anti-Burst construction causes ball to deflate slowly if punctured Tool for building strength and flexibility in the core, upper body and lower body Anti-Burst Gym Ball are also used for physical therapy, athletic training and even weight training Product introduction: Guanda Yoga products made by Eco-friendly material are designed scientifically and produced under strict control, our products can help you to do yoga effectively. It is most often used in physical therapy, athletic training and exercise. It can also be used for weight training.