Microwave Plate Covers are sized to suit any heating job. Whether you're warming a mug of coffee, a bowl of soup or meat and veggies on a dinner plate, there's a lid to fit the task. Splatter-proof covers have vents for better cooking. Set includes 5 diameters: 4-1/2", 5-3/4", 6-3/4", 7-7/8", 8- 7/8". Nest for easy storage. Top-rack dishwasher-safe plastic.