Exercise/Yoga ball ANTI-BURST - Built with sturdy PVC material, this anti-burst pilates ball can handle the most rigorous workouts up to 600 lbs of weight. You'll never need to worry about the balance ball bursting or losing its shape. ANTI-SLIP - The surface of this pregnancy ball is coated in a non-slip glaze that will ensure you have a proper and safe grip. Use it to get fit, relieve back pain, or to soothe aches during pregnancy as a birthing ball. TOTAL FITNESS - Excellent stability ball for yoga, pilates, or physical therapy. It can even help improve posture and core strength when used as an exercise ball chair, making it great for the office or working from home. FAST SETUP - These exercise balls for working out have a quick, dual-action ball pump to easily inflate by hand. Your workout ball is delivered deflated and can be pumped up in minutes with minimal effort.