Advantage:Material - Made of silicone material, safe and reliable, can withstand temperatures ranging from -40 °C to 220°C/ -40°F to 428°F.  Oven safe and freezer safe.Design - The drink covers offer an airtight seal on most glasses, keep dust away from entering the coffee mug, and prevent liquid from splashing out of the cup.Easy To Clean - Under the water tap to hand wash, or put it into the dishwasher for easy cleanup. Position it in a warm place for dryingWide Application - The silicone cup lid can be applied to coffee mugs, tea cups, wine glass, and so on. A good gift for your friends, colleague, and family members.Specification:Material: SiliconeColor: RedDiameter: 10 cm/4 inchHeight: 3.5 cm/ 1.4 inchPackage Included: 3pcs x Silicone Cup Lid