If a ball bursts or loses significant air due to temperature fluctuations, this is NOT covered under warranty and is not a valid reason for complaint. No exchange or refund is possible!
Only inflate the ball to game pressure right before use. Otherwise, always release some air. Do not leave the ball in direct sunlight (e.g., on the beach or behind a window), as it may burst. The same can occur if the ball is used in cold weather and then stored in a warmer room. The air inside would expand, potentially damaging the bladder.