The Ice Mule Coolers is the world's most portable high-performance soft cooler. It combines the portability of a backpack with the performance of a hard cooler. It keeps ice intact for up to 24 hours. It rolls up for storage in its own stuff sack. It even floats. Unlike other soft coolers, the Ice Mule is not sewn together and it has no zippers - sewn seams and zippers leak. Instead, the Ice Mule's patented design utilizes welded seams and a double-layered shell that houses insulating foam between the layers - in essence creating an incredibly well insulated dry-bag cooler that can carry ice without leaking. Plus, the Ice Mule's watertight roll-top closure and side release buckle make it easily accessible and the padded back-strap makes it highly portable. With fabric that is 2x thicker than traditional soft coolers and reinforced seams, this is an everyday cooler designed to be as tough and high-performance as technical outdoor gear that can cost much more.