Olympic sized hardened 'Impact' rubber bumper plates by ISOGYM ranging in 5kg, 10kg, 15kg, 20kg and 25kg sizes, and sold individually. You can also buy them in sets here (coming soon).
The ISOGYM 'Impact' weight plates are built to last and they can be dropped without fear of damage. Suitable for both home and commercial gym settings. Use with Olympic size barbell sleeves of 50mm/2inches.