MLB New York Mets PTX Backpack Cooler The options are endless with the PTX Backpack Cooler, a spacious and fully-insulated cooler backpack with a 20-can capacity water-resistant interior, padded, adjustable backpack straps, and numerous pockets for all your doodads. This versatile travel bag has an exterior stretch cargo cord which is perfect for jackets or securing base/mid layers to dry out before sundown. Our hiking backpack cooler even includes an attachment harness for golf carts. With plenty of space for a picnic lunch, beverages, and more, this soft collapsible cooler bag is just what you need for all your best adventures. Item cannot be shipped to P.O. Boxes