Two Replacement Bladders for all Ollyballs, VICTURY V1 and Buttkicker. Inflation instruction video: https://vimeo.com/785629792 Question: Why is it Oval-Shaped? Answer: The Bladder looks oval but expands into a 4-panel sphere. Question: How do I insert the Bladder? Answer: Please Scan the QR code above for video instructions. Question: How do I deflate the Bladder? Answer: Re-insert any straw into the valve opening behind the orange or blue tab. Move the straw deeper into the valve until the air releases. Question: Why does the Bladder lose air? Answer: Heat and cold will expand and contract the Ollyball. If the valve gets damaged or if it is punctured it will lose air. Make sure the valve is fully tucked into the ball before playing!