This Iron Flask One-Gallon Water Bottle is everything you need to stay hydrated and on top of your goals. Enjoy a full 128 oz of your drink of choice as it stays cold for 24 hours or hot for 12 hours, without bottle sweat, thanks to its double-walled, vacuum insulated construction. Choose between a spout lid that makes it easy to pour from or a straw lid that makes it easy to sip from, both leak-proof and with a wide-mouth design that makes it easy to fill without spills. In other words, this water bottle was designed to avoid unnecessary showers.