Ball Chair-Balance Ball can Improve Sitting Posture, Suitable for Physical Therapy of All Ages, Relieve Back Pain and Core Strength [Extra Thick,Pump Included]

Versatile cushion: Use balance disc with a variety of strength and balance exercises, in or out of a chair, to increase core strength and balance Included pump: product includes manual air pump Weight bearing: Our balance disc can withstand a maximum pressure of 660 pounds Correct sitting posture: You can correct your incorrect sitting posture while sitting on the balance disc, so the balance disc is very suitable for your child 13in: 13in Cushion meets most customers' body shapes