This clever microwave plate cover collapses to just 3mm for space saving storage and pops up easily for you to use the perforations on the top allow steam to escape while keeping your microwave free from splashes and mess turn it upside down and you can use it as a colander or strainer the large 105 size fits most plates and bowls the cover measures 105 inches in diameter and 35 inches tall when expanded and collapses down to 1 inch bpa free and dishwasher safe for easy cleaning