Thermos® brand cold cups are ideal for keeping your chilled beverages cold on the go. Featuring Thermos™ vacuum insulation technology to maximize temperature retention in order to keep your cold drinks cold for up to 9 hours. Each cold cup is made of durable stainless steel and has a convenient clear dome lid. The removable straw is easy to clean and both the straw and cup are dishwasher safe. Great for use with smoothies, cold juices, iced teas and iced coffee. Product not for use with hot liquids.