Features: High-Quality Material: The backflip auxiliary ball is made of high-quality PVC material, with thread design, even pressure release, pressure-resistant, and can be used for a long time. SAFETY: Provides support and stability during backflip exercises, reducing the risks of injury to gymnasts and athletes. Adjustables Shoulder Straps: The exercise ball comes with removable and adjustables shoulder straps, suitable for both children and adults. Automatic rebound: The backflip auxiliary ball is designed with an automatic return function. It will produce a weight less feeling when bouncing, which is very suitable for backflip training. Wide application: The backflip assist ball is not only great for backflip training, but also great for waist and abdominal training, stretching, sensory integration training, etc. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Material: pvc Size: Diameter: 45cm/55cm Package List: 1 x Backflip Assist Ball