Nouna Decor Silicone Drink Coasters with E-Book (Set of 6) SIZE: It can house an entire cup with its size of 3.9 inch or 10cm, which is large enough for saving any spillage with its complete circumferential cover. NO SPILLS: Superior features, which doesnt allows the liquid to leak through, thus effectively holding the liquid and retaining it within its surface. EASY TO CLEAN: Once dirtied, there is nothing to worry, as it can be cleaned easily by a simple wash. It is dishwater safe and can be easily washed in a dish washer. PREMIUM QUALITY: It is made of a material which is strong and sturdy; it doesnt stick to the glassware and can be used for a relaxed beverage time. ECO-FRIENDLY: It is made of eco-friendly material; thus it doesnt cause any pollution hazards.