KEEPS LIQUIDS HOT OR COLD ALL DAY! 40oz vacuum-insulated water bottles keep liquids hot or cold all day. This larger volume is designed for all-day hydration while you hop from work to the gym to a happy hour meet up. It's the ideal size to bring extra liquids when you won't have access to easy refills. yourself and your whole family during: Your busy daily scheduleLong car tripsOutdoor concerts or moviesBoating excursionsOvernight campingSporting eventsGardening or yardwork on a hot afternoonTaking home your favorite local brew It made of lightweight 18/8 stainless steel that is recyclable, non-leaching and will not retain taste or odor. And even better, the double-wall technology prevents condensation on the outside of the bottle to keep your hands (and car and desk and gym bag) nice and dry!