The Igloo 1/2-Gallon Cooler is designed to keep up with you on the trail, in the gym or on the field. The Cool Riser Technology™ is Igloo's promise that you will never have another lukewarm liquid while you sweat, no matter the temperature outside. Rest assured that the durable design of Igloo's 1/2-Gallon Cooler means that it keeps your bottle safe from any accidental drops. The wide mouth opening makes it easy to chug or pour to share.