This is an incredible product from Italy. These reusable covers are easy to use, stretch to fit all shapes, hold strong so you have no spills, are super easy to clean and even easier to store. They take the place of plastic wrap which I really dislike since it sticks to itself better than the containers it is suppose to cover and also aluminum foil that you make use to cover a container. I'm trying hard to go green and only have 1set but I'm going to get another since I find I use these constantly. Product info... Stretchable translucent food covers replace single use plastic wrap, plastic zip bags and aluminum foil. Available in three sizes. 3.5, 4.3, and 6.3 inches in diameter. 100% Food grade silicon material Safe for use in the freezer, refrigerator, microwave and oven and is dishwasher safe. Stretches to work with many sizes and types of dishes, bowls and pans of different materials such as stainless steel, porcelain, glass, or earthenware. Can be used at temperatures between -76 and +446 degrees F (-60 and +230 degrees C) UV resistant and does not deteriorate over time. Made in Italy