Specifications Hign-concerned Chemical:None Model Number:Balance Disc Trainer Style:Point Massage Size:13 inches / 33 cm diameter Brand Name:Rindu Origin:Mainland China Core Balance Disc Trainer Inflated Stability Wobble Cushion With Pump For Improving Posture Stability Exercise Fitness Training Product description The Core Balance Disc is a small but useful tool to help train your core, tone muscle, and improve your posture. The unstable surface requires your body to engage all of your core muscles, resulting in better balance and overall strength. The inflation amount can be adjusted for less or greater sturdiness, depending on your workout need, and the non-slip grip surface prevents slipping. Comes with a pump, making it easy to inflate and deflate. Features 1. Balance disc promotes core stability, strengthens muscle tone, improves balance and body posture. 2. Used as a wiggle seat to provide sensory input, and to help calm children that have a hard time sitting still. 3. Ergonomic seating, relieves back pain and shoulder aches 4. Balance cushion provides an unstable surface to exercise on, requiring you to use more muscles to stay balanced. 5. Ships inflated, includes a pump for adjustments. Stability disc size: 13 inches / 33 cm diameter Packing List 1 * Core Balance Disc Trainer Note 1. Due to the light and screen difference, the color of the item may be slightly different from the pictures. 2. Please allow 0.5-2cm differences due to manual measurement.