I really like these re-usable covers as a replacement for plastic wrap, since I can never finish a meal in one sitting, but they are a little hard to use. I keep them in a ziplock bag because they are dust/hair magnets and they also stick to each other (including folding over and sticking to themselves). Also, you have to be careful when trying to pull them apart because they tear easy. Other than that, they are easy to clean and handy to put over a bowl of food you want to save for later, but in order to completely seal it, you will need to put a rubber band around the edge of the bowl.