icrowave rack make the inner layer of the microwave oven into two layers, which solves the problem about heating two things at once, saving and saving time. Can also be used as a layered rack, and it is easy to layer and organize small objects in the refrigerator or on the table. Fold down the handles of microwave cover for food and use it to cover foods to splatter and keep your microwave clean. Oven Rack Layered Steaming Tray Rouded Mircrowave Kitchen Accessory. The microwave rack is made from food grade plastic, the frame has multiple disc- type anti- skid lines, and the bottom can also be folded for convenient storage, It is intended for microwave use only.