The 24 fl. oz. Avex FreeFlow Stainless Autoseal water bottle is that ideal everyday size bottle, perfect, whether you are on the trail or navigating the city. It is made of colored stainless steel that gives the bottle its ability to insulate drinks either hot or cold. Cold beverages can maintain their temperature for 29 hours straight, whereas warm ones can stay hot for up to 10 hours. This is ideal if you take the bottle out to exercise or on outdoor adventures. The Avex FreeFlow water bottle is BPA-free. Each vessel features a revolutionary Autoseal patented lid that has a press-to-sip design that automatically seals between sips. Now, you have a spill-free way to take sips of your drinks!