Our top-performance, super durable Igloo 24 QT. IMX Hard-Sided cooler features Ultratherm® insulation that provides advanced ice retention (the longest-lasting among all our coolers!) and weighs 40% less than coolers with similar performance. Thanks to the built-in features like a bottle opener, cup holders, lockable lid, fish ruler and wire basket the compact 24 quart capacity IMX is the bestselling cooler that countless adventurers rely on.