... 1100 lbs weight.Pvc fitness ballMaterialsPVC, environment-friendly, 6P freeFeaturesRegular, Anti-burst, Transparent, Big sticker, Non-longitude, Durable, Rainbow, Mini ... improve coordination and develop strength.Tested by 1100 lbs weight (anti-burst material) and certificated by SGS.Tested by 660 lbs ... product design, color box design and production, CD replication Fitness Yoga ball