Beautiful example of a product cleverly designed to meet a very universal need. Simple way to keep what is on your plate fresh. Just place the PlateTopper on top of your food plate and press down. Suction creates an airtight seal. Easy to store in the refrigerator or heat in the microwave. When ready to eat, simply pull up the tab to release the seal. Food is plated, ready to eat, hot or cold, depending on how you store or use the PlateTopper. We tested extensively for several weeks - works perfectly. Highly recommended.