DescriptionWith steady black support and non-slip ball surface, our exercise yoga ball chair comes with an excellent resistant advantage to prevent injuries. It's easy and safe to use with long service life. The ergonomic design will help you to build a healthier back, the spine, relieve pain, and improve your overall well-being.Feature- Color: Random color. - Material: PE. - Size: Approx. 66 x 53 x 75 cm / 26.0 x 20.9 x 29.5 inch (L x W x H). - Keeps your posture where it needs to be. - Helps you build core strength while supporting proper spinal alignment and upright posture. - Balancing helps build a stronger core and tone muscles to help reduce lower back pain and stiffness, leading to better focus, clarity and productivity. - 55 cm exercise ball is great for traditional fitness, meaning you can use it at work for seated comfort or during your home workouts. - The support is steady and with 4 easy-glide casters, easy to move. - Perfect for home and office exercise.