Our bumper plates are made from high-quality rubber, with high styrene content, the rubbers are harder and less rubbery so that they shouldn't bounce back up.  These bumper plates are versatile have the perfect level of bounce to maximize your workout effect and can withstand thousands of drops.  High impact resistance even when dropped from overhead.  They provide a stronger, dead bounce bumper plate for those demanding the highest quality and performance.  Each plate is color-coded to provide easy identification and a long-lasting engraved marking of the weight size.  These bumper plates are versatile and have the perfect level of bounce to maximize your workout effect.  All weights have the same consistent diameter to maximize surface area when they are dropped. 
Bumper plate measurements
All the plates of the same dia 17 3/4 inches Long
10 lb.  thickness 1 inch
15 lb.  thickness 1 ¼ inch
25 lb.  thickness 2 inches
35 lb.  thickness 2 ½ inches
45 lb.  thickness 2 ¾ inches
55 lb.  thickness 3 ½ inches
160 lb.  Set Includes: 2 x 10 lb. , 2 x 25 lb. , 2 x 45 lb.