When you press your fruit or vegetable up against The Food Snuggy it seals so tight that no air can circulate and all juices remain as tight as if it were never even cut. This will give it the lifespan that it normally would have if you had not cut half of it! Each Snuggy has a rim that folds up to securely seal off the fruit or vegetable even up the side of it, this gives it an airtight seal that you can't find with any other plastic wrap or container!