The durometer rating for bumper plates is extremely important. The purpose of bumper plates is to be able to perform workouts where the bar is dropped on the ground — therefore, you’ll want a plate that doesn’t bounce too much. The durometer rating is going to determine how much bounce you should expect to encounter. This rating ranges on a scale of 65 to 100 for bumper plates, and since the Echo Bumpers have a rating of 88, they offer minimal bounce.