The YETI 64 oz (1893 ml) bottle takes insulation to the next level, complete with a double-wall vacuum to keep drinks cold or hot for hours. Perfect for remote campsites and harsh worksites alike. Unlike narrow-mouthed water bottles that are a hassle to fill or rinse, our Rambler Bottle features Over-the-Nose™ Technology for easy loading, drinking, and cleaning. And it’s BPA-free. In other words, the 64 oz stainless steel water bottle is the only insulated container for cold (or hot) beverages that’s built for the wild.