If a ball bursts or loses significant air due to temperature fluctuations, this is NOT covered under warranty, is not a valid reason for a claim, and cannot be replaced or refunded!
The ball should only be inflated to playing pressure during use. Otherwise, always release some air. Avoid leaving the ball in direct sunlight (e.g., at the beach or behind a window), as this can cause it to burst. Similarly, if played with in cold temperatures and then stored in warmer areas, the internal air will expand and may damage the bladder.