If a ball bursts or loses air due to temperature fluctuations, this is NOT covered by warranty, is not a reason for a claim, and no exchange or refund will be provided!
The ball should only be inflated to playing pressure during direct use. Otherwise, always release some air. It should not be left in direct sunlight (e.g., at the beach or behind a window), as this can cause the ball to burst. A similar outcome may occur if the ball is played in cold temperatures and then stored in warmer rooms. The air inside will expand, potentially damaging the bladder.