This large convertible backpack duffel is built with ruggedly dependable & water resistant polyester. Our convertible duffel can be worn in multiple ergonomic ways, use it as a backpack, a shoulder bag and a hand carry bag as you like. It provides a large capacity to fit up a week's packing or more bulky sports gears, with multiple inner pockets to keep small stuff organized and easy to find. Rugged, versatile, and ready to go!