100 years, THERMOS is trusted by consumers to provide innovative portable containers that promote a safe and healthy lifestyle. THERMOS delivers when it matters. THERMOS brand products offer superior cold retention that keeps beverages cool and delicious for hours, and the 10 ounce Straw Bottle is no exception. THERMOS vacuum insulation technology virtually eliminates temperature change within the beverage container by creating an airless space between two stainless steel walls. The result is an insulation layer that performs better than any other. A superior insulated container you can depend on to keep your child's beverages colder, fresher, longer. This hydration bottle keeps beverages cold up to 7 hours - more than 10 times longer than an ordinary plastic water bottle. Constructed with double wall stainless steel, this 10 ounce straw bottle is virtually unbreakable and built to withstand the demands of everyday use. Featuring a hygienic, push-button lid, this straw bottle is easy to open and drink from. In order to maximize the incredible insulation technology, it is recommended to pre-chill the bottle just prior to use. This can be accomplished by filling the bottle with cold tap water, attaching the lid and letting it rest for a few minutes. Before you are ready to use, simply empty the water and fill with your favorite beverage. Attaching the lid will further increase the thermal efficiency. The Straw Bottle is made of BPA-free materials and is backed by a five-year limited warranty.