An ideal choice for the fashionista on the go, the 18 ounce Pop of Pink Hydration Bottle is an ideal choice to keep your favorite beverage close at hand. The light and compact design makes for easy transport and storage and it comes with features to make for a more enjoyable drinking experience. 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 beverages hotter, colder, fresher, longer. Constructed with double wall stainless steel, this 18 ounce bottle is virtually durable and built to withstand the demands of everyday use. Its contoured body is comfortable to hold and fits most automobile cup holders. The specially designed hygiene push button lid features a pop up straw. Because of the double wall insulation, the stainless steel body stays cool to the touch with hot beverages and condensation-free with cold beverages leaving no water rings behind. In order to maximize the incredible insulation technology, it is recommended to either pre-chill or pre-heat the bottle just prior to use. This can be accomplished by filling the bottle with cold or hot 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.