Weights 10lbs and 15lbs are not designed to be dropped when doing strength training unless combined with heavier weights (25lbs, 35lbs, 45 lbs, and 55lbs). Dropping 10lbs or 15lbs plates alone above the hip will result in cracking or breaking. Failure to use properly will void the product warranty.
The 10lbs and 15lbs Xtreme Monkey Crumb Rubber Bumpers are covered under the Xtreme Monkey 100% Satisfaction Guarantee for 6 months from the time of purchase. The 25lbs - 55lbs rubber bumper plates are covered for 3 years from the time of purchase.