"Environmentally friendly materials, explosion-proof design: This donut ball is more environmentally friendly, free of BPA and heavy metals, and latex-free PVC. PVC is durable and explosion-proof design, very safe, free of harmful substances, and can withstand up to 300 pounds.Non-slip and portable: The donut fitness ball with a non-slip grip line makes sitting or exercising safer. It is lightweight and can be easily carried to anywhere you want by simply blowing and inflating it with a bellows.Improve balance and strength: The inflatable donut ball improves core strength, balance, coordination, and flexibility. It increases instability while training stable muscles to improve fitness effects.Well-designed, perfect gift: You can use it to lose weight, or play with your baby and enjoy a happy parent-child time. Designed for use with a fitness ball, it prevents the balance ball from rolling or sliding when sitting or storing. With it, you can sit or do different balance exercises more confidently.Wide range of uses: It can not only be used as a fitness ball, but also as a ball chair for gyms, offices, homes, nurseries, and classrooms. For example, Pilates, yoga, abdominal and back training, gymnastics, bodybuilding, core training, balance training, physical therapy."