Features 1. Automatic return: The somersault assist ball is designed with an automatic return function, which creates a sense of weightlessness when bouncing, making it very suitable for backflip training. 2. Adjustable shoulder straps: The sports ball is non slip and comes with detachable and adjustable shoulder straps, suitable for children and adults. 3. Packaging list: There is one yoga ball, air pump, air plug, air pump, and video tutorial inside the packaging. Not easily damaged, reliable, durable, and lightweight, it is very suitable for fitness and exercise accessories. 4. High quality materials: The somersault assist ball is made of high-quality PVC material and features a multi threaded design, ensuring even pressure release and pressure resistance. 5. Multi functional use: The somersault ball is not only very suitable for backflip training, but also for waist and abdominal training, yoga assistance, stretching, sensory integration training, etc. Specification Material: PVC Color: Blue, Pink, Grey Size: 45 x 45 x 45 cm, 55 x 55 x 55 cm Weight: 1400 g Package Include: 1x Auxiliary Ball