Cute Glass Cups: Our iced coffee cup is made from 100% borosilicate glass, which can withstand temperature changes of 340 F(170C), and comes with a bamboo lid, which is durable. The color changing cups with lids and straws is easy to clean, and while the large diameter glass straw is perfect for any beverage. Color Changing Flower Design: Watch as the flower pattern transforms from white to blue,pink and orange when exposed to cold temperatures, making it a delightful visual experience throughout the year. NOTE: DO NOT SCRATCH OR EXPOSE TO DIRECT SUNLIGHT. DISHWASHER IS NOT SAFE. THE MICROWAVE IS NOT SAFE Versatile and Stylish: These cute glass cups are perfect for on-the-go use, holding up to 18 oz of any beverage. Our color changing cups with lids and straws are a must-have for any home. Whether you're hosting a party or simply enjoying a drink on your own, Whether you're enjoying an iced coffee, beer, cocktail, or tea, these color changing cups are a stylish and practical addition to your kitchen or bar. Special Iced Coffee Cup Gift: The cute glass cups has a color-changing design, which is very stylish and special. No one will say no to this novel and fun can shaped glass coffee cup. The smoothie cups with lids and straws are perfect for birthdays, Valentine's Day, Herhousewarming gifts, tea sets, home bars, graduation, weddings, bachelorette parties and christmas gifts. Safe And Secure Packaging: We recommend hand washing only to preserve the design on your glass tumbler with color-changing. We carefully pack each drinking glasses in a sturdy, gift box to ensure safe delivery to its destination. Enjoy the experience of outdoors with your color changing iced coffee cups.