Like any plastic, BirdieBalls can crack and have a finite life. There are a few factors that affect the crackability: if the balls are being hit in temperatures below 45 degrees Fahrenheit, high club speed, the amount of times they have been struck, and the surface on which the balls are landing. If the balls land on something that can cause a defect on the ball, the weakened spot can crack when struck. If your BirdieBalls do crack, it is safest to not hit the ball again.