Keep the cup hygienic and clean: the silicone drinking glass lid fits securely on the rim of the cup, providing a dust-proof and sealed barrier that helps keep insects out and maintains cleanliness for your drinking cups and coffee cups. Helps prevent spills even when the cup is tilted.Good seal: Gently press the center to create an airtight, waterproof, and leak-proof seal, helping to retain heat and keep your coffee or tea hot.High Quality: Made from high-quality food-grade silicone, these cup lids are non-toxic, odorless, reusable, resistant to deformation, and designed for long-lasting durability.Easy to wash: The silicone cup lid is reusable and made of soft, easy-to-clean material. It can be cleaned in the dishwasher or by hand washing.Diameter: 11 cm (4.33 inches), height: 3 cm (1.18 inches), suitable for cups with a diameter of approximately 9.5 cm (3.74 inches). The silicone cover helps block dust, provides an airtight and leak-proof seal, and helps retain heat.Material: Silicone Product diameter: 11 cm Option B: Set of 6 colors (purple, blue, red, green, orange, yellow) Option A: Set of 8 colors (white, yellow, orange, red, purple, light blue, blue, green)