Item Type: Yoga Balanced Ball Material: PVC Weight: Approx. 950g/33.51oz Diamater: 33cm/12.99in Inflator: 15.6x3.5x3.5cm/6.14x1.38x1.38in Package List 1 x Yoga Balanced Ball 1 x Inflator 1PVC Material: The balance plate seat cushion is made of anti skid PVC material with a diameter of 33cm, making this balance pad very suitable for your needs. 2Front Floating Points: The front floating points can play the role of blood circulation and muscle relaxation in yoga training. 3Back Bumping Points: The back bump can be used as the sole massage to better help the rehabilitation of ankle sprains, and also play the role of anti skid. 4Balance Training: Stand on a balance pad or cushion on one foot to keep your body stable. It is also possible to close the eyes, so that the stimulation of the proprioceptive nerves will be more intense, which will bring more challenges to the core stability. 5Wide Application: This yoga mat is widely used, it can be used for yoga practice, fitness, and other sports can also be used for massage.