Prevents dust, keeps coffee tea hot and does a great job of keeping fruit flies out of your coffee cup. Simply place the cover on the rim and press down gently for a tight, tight seal. Gently lift the edge to release the seal. Easy to use. Made of food grade silicone, they are non-toxic and reusable so you never have to use plastic wrap. Keeps the water cool, keeps the drink hot and hygienic. Prevents dust. High operating temperature from -50 C to 230 C. Description: These items are made of high quality food grade silicone that is non-toxic and durable, with an adorable cat on it. It is specially designed to keep the heat or the hygiene of your drinks. It is a great gift for your friends in love with your cat. Features: Color: as shown. Material: silicone. - Dimensions: diameter: 10 cm. Content: 3 cup lids.