SPECS: Holds up to 9 cans or 2-750ml bottles Capacity: 9L Dimensions: 7 in. x 7.5 in. x 14 in. TECHNOLOGY: MuleSkinET™, an exceptionally sturdy exterior fabric, is combined with MuleSkinEV™ a tough interior layer, to create a rugged shell that protects against the elements PolarPlus™ insulation for 24+ hours ice retention The IM AirValve™ allows extra air to be added to the insulation layer, which increases the insulating capability. It also allows you to release air so that the cooler can roll up for storage FEATURES: Ergonomically designed to be carried on your back like a premium backpack Adjustable, padded strap for a comfortable fit Made from heavy-duty waterproof fabric Welded waterproof seams with no zippers Zipper-free roll-top closure