Thermos Stainless-Steel, Element 5 Leak Proof Hydration Bottle, 22 oz. Made with an unbreakable 18/8 stainless-steel interior and exterior, the Element 5 by Thermos is designed to go wherever your journey takes you and to enhance the experience of being there. Its leak-proof drink lid with hygienic cover leaves you worry free over spills. TherMax double-wall vacuum insulation locks in temperature to preserve flavor and freshness. The vacuum insulation virtually eliminates temperature change by creating an airless vacuum space between two stainless-steel walls, resulting in an insulation layer that can be depended on to keep food and beverages colder, fresher, longer. For active people on the go, an integrated stainless-steel carry loop with carabiner makes for easy attachment to gear, and a rubberized shock-absorbing base with wide stance adds stability. The Thermos holds up to 22 ounces of your favorite beverage.