When it comes to coolers, bigger is better (for maximum capacity); so is smaller (for minimum space-hogging when empty).
Coleman's Collapsible 72-Can Chest Cooler gives us both. Expanded, it's 24 inches long, a foot wide and 15 inches tall. When the insert is removed, it collapses to 3 inches high.
The cooler has mesh side pockets and a nylon front pocket for extra storage. A Velcro-closure top hatch lets you reach in and grab a cold one without having to unzip the whole lid.
In testing, the cooler kept a full load cold for eight hours in summer heat; ice stayed mostly frozen overnight at room temperature.
The thick insulation and removable rigid insert make the chest a hefty 9.5 pounds when empty.
Info: The Coleman Collapsible 72-Can Chest Cooler costs about $32 and is available in red and gray or green and gray.