Take your refreshments where you never thought possible with the ICEMULE Classic Medium 15L Cooler. This unique, soft-sided cooler rolls up for compact storage and has a zipper-free roll-top closure. MuleSkinET exterior fabric and the MuleSkinEV interior provide exceptional durability that withstands your on-the-go lifestyle; plus, PolarPlus Insulation delivers up to 24 hours of ice retention so you can be sure your drinks and snacks are ice-cold when you reach your destination. This ICEMULE cooler has an IM AirValve that allows you to add more air to the insulation layer, further increasing the insulating power, and when you're finished, you can release the air for compact, roll-up storage.Manufacturer model #: 1005. Roll-top closure for zipper-free convenience Rugged MuleSkinET exterior and MuleSkinEV interior PolarPlus Insulation holds ice up to 24 hours IM AirValve lets you add air for extra insulation Release air for compact storage that rolls up