Food Grade Silicone MaterialMade of BPA free, food grade silicone.No smell, durable, reusable, non-toxic. Colorful & Exquisite DesignPerfect for home, office and especially good as a camping cup lid to keep flies, wasps, and other unwanted bugs out of your drink and good choice to be a outdoor camping cover. one person a color, can clearly distinguish their own use of the cup. Temperature Range silicone glass drink covers can handle the extreme temperature from -40~480 F(-40~230 C). Can be used in microwave, refrigerator or oven. Airtight Lid & Keep Warm/ColdSeals tight on all smooth rims like cups, mugs and glasses, prevent from dust, airtight and leak proof. The cup lids silicone prevents liquid from sloshing out of the cup when you're working or in a moving vehicle. Easy To Clean cup lids have stable shape, strong tension and long service life. Simply wash it with your hands or throw it into the dishwasher. Dear customer, Thank you for choosing our products. If there is any problem with our products, please contact us through the order information. We will be happy to serve you and solve it for you as soon as possible within 12 hours, thank you! Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 169 hours Hope you have a pleasant shopping experience!