DC Kewler Cooler Backpack - DC Kewler cooler backpack. Keep your beverages on ice in the Kewler, a fully insulated cooler backpack that features a front zip compartment, side elastic pockets ,and an internal mesh organizer. Carry it with the padded handle or over your back with its shoulder straps. Approx dimensions: 16" x 12.5" x 6"(41cm x 32cm x 15cm). 20L Volume. Imported.