Product Description Dimensions: diameter 50cm, height 30cm Color: blue Material: PVC Package Contents: 1 * Yoga Ball 1 * Pump 1. [Eco-friendly Material, Anti-burst Design]: This donut ball is made of more environmentally friendly, BPA & heavy metal free and latex free PVC. PVC is durable and has anti-burst design, very safe. 2. [Anti-slip & Portable]: The donut exercise ball with anti-slip lines makes sitting or exercising much safer. It is lightweight, easy to carry, take anywhere you want to blow it up and inflate it with the bellows. 3. [Improves Balance & Strength]: The inflatable donut ball will improve core strength, balance, coordination, and flexibility. Adds instability during exercise to engage stabilizing muscles to increase fitness effectiveness. 4. [Well-designed, Perfect Gift]: You can use it to lose weight, play with your baby, and have a happy parent-child time. Specially designed for use with fitness balls to prevent the balance ball from rolling or sliding when sitting or stored. With it, you can sit or do various balance exercises with more confidence. 5. [Wide Use]: It can be used not only as an exercise ball, but also as a ball chair in the gym, office, home, kindergarten, and classroom. Such as Pilates, yoga, abdominal and back training, gymnastics, bodybuilding exercise, core training, balance training, physical therapy.