Press Dome is a wonderful food sealer. The Press Dome is very easy to use and can seal containers in seconds. The Press Dome is microwaveable, dishwasher friendly and refrigerator friendly. There is no need to waste any more money on expensive pastics and disposable bags to store food. Food can be kept up to 3 times fresher by using the Press Dome to seal any container. The food that is kept on a plate can be sealed with the Press Dome as is, without having to transfer it to another bowl or box. The Press Dome uses vacuum technology to seal food.