The Matfer round 40cm diameter seafood tray is made from very tough opaque bluish SAN plastic. Presentation on the round tray is made easier due to raised centre, 25cm in diameter. The tray is stackable, and dishwasher safe. The tray has a granite like finish on the exterior. The tray edge is 35mm high. Price was $52.00 but reduced now to $2.00, to clear 4 sea food trays.