What is a Bumper Plate? Bumper Plates, or just 'bumpers', are weight plates designed for 50mm (Olympic) barbells which you will find at all gyms and are comprised of an iron or steel core and thick rubber protective coating.
Bumper plates are high density rubber weights — usually with a steel inner core — that fit on standard 2-inch (5-cm) barbells. They're especially useful for workouts like CrossFit or Olympic lifting, as they won't damage your floor when dropped from a distance.
