ProSource Color Training Bumper Plates are our premium bumper plates, made with high quality durable rubber that can take a beating. Colored and marked to IWV competition standards, the vivid color-coding makes them easy to distinguish and cohesive with Olympic weightlifting and CrossFit. Each plate is also calibrated to competition standards for the most accurate weights. With a durometer measurement of 88, they feature minimal bounce for ease of use and safety. Each plate has a diameter of 450mm and is 30mm thick and fit on Olympic barbells with two-inch sleeves. These are perfect for practicing and perfecting Olympic lifts, “big 3” lifts, CrossFit WOD’s, and general strength training. Best of all, their affordability makes them perfect for anyone opening a gym, building their own home gym, or working with a budget.