Koolatrons D13 Hybrid Portable AC/DC cooler is the ultimate personal cooler, featuring lightweight fabric construction with multiple pockets, built-in clips and bungee ties, and adjustable shoulder strap and carry handles. Save time and money by bringing your own snacks and drinks to work or on outings or day trips. This 13 L /14 Quart capacity portable cooler/warmer holds up to 20 standard 355 mL/12 oz soda cans or three 2-litre pop bottles and collapses when empty for space-saving storage.