[High-Quality Material ] -Trideer exercise ball stands out among its peers. Rigorously weight-tested, it effortlessly withstands up to 2200 pounds, catering to individuals with higher body weight. Crafted from sturdy, non-toxic PVC material, it's entirely free from BPA and heavy metals, ensuring a safe choice for pregnant women and babies. [Anti-Burst Upgrade - Reassuring Protection] -With an anti-burst capacity of up to 330 pounds and a honeycomb structure for slow deflation, it minimizes the risk of injury due to falls, providing you with the caring protection you'd expect from a loved one! [Non-Slip Surface - Secure Movements] -The Swiss ball adapts seamlessly to various exercise environments—be it at home, in the gym, or outdoors—providing premium slip resistance for worry-free movements. It's a versatile choice for Pilates, yoga, pregnancy gymnastics, and various low-impact exercises. Don't forget its suitability for a full-body exercise ball HIIT cardio workout! [Office Ball Chair - Fun and Health] -Tired of standard office chairs? We've got you covered! Try our Office Ball Chair for a healthier, more active lifestyle. This chair acts like magic, correcting your posture and relieving back pain. Plus, it allows you to efficiently strengthen your back and abdominal muscles or indulge in some deep stretches during or after work! [Easy Inflation and Perfect Packaging] -Trideer exercise ball comes with a quick inflation pump (45/55/65cm equipped with a hand pump; 75/85cm equipped with a foot pump), 2 air stoppers, and detailed instructions. Available in 5 sizes—45cm, 55cm, 65cm, 75cm, 85cm—to meet all your needs. [Why is the yoga ball I received smaller than advertised?] For an optimal experience, we recommend inflating it to 80% initially, then waiting 1-2 days before inflating it again. Made of PVC, the ball needs time to fully expand, so ensure it's fully inflated for accurate sizing. Tips: Wood or paint is not friendly to the exercise ball. Keep it away from wooden products, furniture, or painted walls. Despite their cuteness, your lovely pets might damage the ball with their sharp claws, so a friendly reminder to keep them away during your ball exercises. < b >Q: Why is my yoga ball smaller than expected?< /b >< br > A: Please refer to the inflation instructions. After the initial inflation, let the ball sit undisturbed for 48 hours, and then inflate it again to achieve the desired size. This process allows the material to adjust and the ball to expand fully.< br > < b >Q: What does it mean that the fitness ball is "ANTI-BURST"?< /b >< br > A: "Anti-burst" means that when the fitness ball is subjected to weight, even if pierced by a sharp object around the size of 1*4mm, it will slowly deflate instead of bursting suddenly. This design is intended to prevent injuries during use. All Trideer yoga balls undergo thorough limit load tests before leaving the factory, ensuring they can withstand weights of up to 330 lbs.< br > < b >Q: How do I choose the right size for a yoga ball?< /b >< br > A: To select the appropriate size for a yoga ball, consider your height. Trideer offers a variety of options. Generally, the Small (S) size is suitable for individuals below 4'5", the Medium (M) size for heights between 4'5''-5'1'', the Large (L) size for those between 5'1''-5'9", and the Extra Large (XL) size for heights between 5'9''-6'3''. The XL size is suitable for individuals 6'3'' and above. Choosing the right size ensures proper alignment and effectiveness during exercises.< br >