Come and see our amazing products. This inflatable balance ball can be effectively served as a multifunctional Office Ball Chair. It constantly reminds you of a good sitting posture as your various body parts actively make subtle adjustments to stay in balance, which makes you automatically sit up nice and straight, increasing overall blood circulation. The soft PVC surface produces a massaging effect to alleviate your fatigue while working in front of the desk.Our exercise ball is safety guaranteed with the honey comb structure, so even if you accidentally pierce the yoga ball, you will never fall to the ground immediately.The price includes the shipping cost to ca ,QTY for 500pcs and over by ocean Pls confirm with us about the packing info, stock color and exact production time before placing your order