Hydro Flask's durability, nature-inspired design, and mission to reduce single-use plastics make it worthy of the Goat, so we teamed up to deliver the Backcountry 21oz Standard Mouth. The burly double-wall stainless-steel construction keeps our sips clean and cold for 24 hours or hot for 12, while the watertight lid ensures we don't lose a drop when on the move.