【Colorful & Exquisite Design】You will get 6 different color cup lids. The lids’ color are bright and pretty, the Jewel acrylic knobs are sparkly and attention-grabbing. Perfect 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 wine cover. one person a color, can clearly distinguish their own use of the cup. The diamond knob is removable and you can DIY rematch them as you like. 【Airtight Lid & Keep Warm/Cold】Seals tight on all smooth rims like cups, mugs and glasses, prevent from dust, airtight and leak proof. The cup covers silicone prevents liquid from sloshing out of the cup when you're working or in a moving vehicle. Whether it's hot coffee, soup, or iced tea, our silicone coffee cup lids help maintain the temperature, freshness, and flavor of your cup's contents. 【Perfect Size & Temperature Range】11cm/4.33" in diameter, suitable for all types of cups with a diameter of less than 10cm/3.94". Our silicone glass drink covers can handle the extreme temperature from -40~480 F(-40~230 C). Can be used in microwave, refrigerator or oven. But Please note that you must take off the diamond part from the lids when put the whole lids to microwave or oven.