This balance trainer enables efficient training of your balance, fitness, and coordination. The balance cushion helps relieve and stabilize your spine and back, while also engaging your abs just by sitting on it When used standing up, this air cushion strengthens your joints and improves your balance. Additionally, it features an anti-burst design, meaning it will deflate slowly rather than bursting if punctured, enhancing safety during use Posture Trainer: While seated on a balance board, your posture is continuously challenged by its shaking motion. You must continually adjust your position to achieve proper balance, resulting in improved posture through this exercise Our wobble cushion activates more muscles and makes them much stronger. While you are sitting on it at a regular basis, you will find more flexibility in your lower half color: Gray Material: pvc Package Contents: 1 x yoga balance mat 1 x hand pump Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.