4 In 1 microwave stand It's a tray, a plastic stacker a lid and a cooling rack Care instruction Wash prior to first use Top rack dishwasher safe Excessively high temperatures can cause warping,distortion or damage to the stand. Do not use abrasive cleaners, such as steel wool,sourcing pads or cleaners with chlorine bleach on plastic, as they may scratch and ruin the surface. Caution: Use caution when removing hot items from the microwave. Do not use in an oven. Do not use as a cooling rack for items being removed from an oven or direct heat such as a stove top or grill.