HIC 333 Microwave Cooking Covers 8-Piece Set Quick Cook Microwave Covers The micro cover speed up the heating process and also vents out steam. When finished microwaving leave the covers on and it will hold the heat inside until ready to drink or serve. This quick cook bonus pack is perfect for microwaving soups, teas, coffee, sauces and much more without the worry of splashing. Includes: (3) 9", (3) 7", (2) 5" Covers