6-piece reusable silicone coffee cup lids. Made of food-grade silicone rubber (BPA-free, non-toxic, reusable and safe) Protects against drink spills and dust. Keep it warm or cold for long periods of time (safe temperature: -40~446 F). Suitable for cups made of ceramic, glass, plastic, paper or any other material. Classic reusable silicone coffee cup lid Set contains 6 pieces for replacement Protects against drink spills and dust. Keep it warm or cold longer Designed with a small hole for venting and an opening for drinking Suitable for ceramic, glass, plastic and paper cups Made from food-grade silicone rubber, these lids are dishwasher, freezer, and microwave safe. Silicone is a safe, non-plastic (BPA-free) material for food use and will not leach any chemicals. Product size:Diameter: 9.5cm (suitable for 9cm cup mouth), height 2.1cm Suitable for standard coffee mugs/cups with outer diameters between flexible and soft, suitable for multiple size cup options, please check the diameter of the cup before purchasing. Warm tip: It would be better if the handle of the cup is in the middle of the cup or lower. Note: Silica gel is an absorbent material and may absorb the odor of the packaging during transportation. If the silicone product you receive has a little smell, don't worry, just leave it for a day or two and it will release automatically. In addition, silicone is a material that collects dust easily, but it is also easy to clean. Please rinse the cap before or after use to keep it clean.