1,Tri-Lid Bottle: Straw lid for easy drinks, a big mouth for fast fill-ups, and a chug lid for drinks on the move. 2, Keeps Temp: Stays cold for 24 hours or hot for 12 hours. 3, Tough Build: Made with strong 18/8 steel, free of BPA. Stops bacteria and smells. 4, No Leaks: All lids are made to stop any spills. 5, 20oz Size: Big enough to keep you watered, small enough to handle easily. 6, For All Days: Good for walks, travel, or gym time. 7, Eco-Smart: Use it again and again. Better than single-use bottles.