SPECS: Holds up to 24 cans or 5 -750ml bottles Capacity: 30L Dimensions: 12.5 in. x 9 in. x 25 in. Top Opening: 20 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 Polar Layer XT™ insulation helps retain ice 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 straps for a comfortable fit Made from heavy-duty waterproof fabric Welded waterproof seams and waterproof zippers Zipper-free roll-top closure Three waterproof cargo pockets Two industrial clip points for attaching gear Two molle webbing attachment Model: 1500