1. Material: It is made of 100% food-grade silicone, which is environmentally friendly, durable, non-toxic, reusable and safe. It can be reused and washed, and can be used in ovens, microwaves and refrigerators, and is suitable for various places. 2. Silicone cup size: The diameter is about 10 cm (3.9 inches). Temperature range: approximately -40 to 250 degrees Celsius. 3. It has dust-proof and anti-slip features, helping to keep water cups and coffee cups relatively hygienic and clean. 4. Cups with cute bows are available in 6 different colors to match different cups. 5. It can keep drinks warm for a certain period of time. It goes well with coffee, cocoa and hot drinks. 6. It is fully sealed, and can prevent dust, air and leakage to some extent, helping to keep coffee or tea warm. 7. Color: Multicolor. 8. Package contents: 6 silicone cups. 9. Only the above package contents are included, and other items are not included. 10. Note: Light and different monitors may cause slight differences between the color of the item and the actual product. The allowable measurement error is around ±1 - 3 cm.