Description: Inflatable donut balls can improve core strength, balance, coordination and flexibility. It can be used as exercise and fitness Yoga equipment, it is much more stable, flexible and interesting than the ball. Thickening design, slip-resistant durable PVC material can support up to 300 pounds of weight Light weight, safe, non-toxic and tasteless, no harmful substances Suitable for body building yoga, leg exercises, balance training, stools and seats, which can be used in gym, office or classroom. Specification: Material: PVC Size Chart: Size: 50cm Package Includes: 1 Piece Yoga Ball 1 Piece Inflatable Pump