Walmart has the BalanceFrom Olympic Bumper Plate Weight Plate with Steel Hub for only $22.50! (Reg. $40) Bumper plates, or just bumpers, are Olympic-sized weight plates that are made of thick, dense rubber for the purpose of allowing a loaded bar to be safely dropped without risk of damaging your lifting platform, the plates themselves, or the floor.High Density rubber plates with solid stainless steel insert can withstand repeated drops. They will not only protect any type of floors, but also protect your bars.