Welcome your presence, our products are beautiful and durable.Product Name: Yoga BallSize: Diameter: 58 cm / 22.8 inchesMaterial: pvcprompt:1. The product picture may have a little color due to different light angles or shooting, and the product should be the real thing.2. Manual measurement, there may be 1-3cm error, please understand.3. If you do not receive the order within 30 days, please contact us in time!Yoga ball inflatable steps:1. First prepare the ball, air pump, air plug, and then remove the ball from the trachea into the air hole.2. Step on the air pump continuously to inflate the ball, taking care not to loosen the trachea.3. During the inflation process, you can press your hand to see if it is full and pull the trachea fully out.4. Insert the prepared air plug into the ventilation hole5. Firmly insert the air plug to check for air leaks6. Finally check if the plug is firmly insertedmaintenance:1. Prepare a towel and detergent, wipe the dust with a wet towel first2. Wet the towel with detergent to foam, and wipe with a spin3. Wipe clean with a clean wet towel4. Dry naturally after dryingUsually, our delivery time is 1-2 days, and the delivery time is 15-20 days. Looking forward to your next visit!