Nexpak 26" 3800cu.in Convertible Tactical Duffel Range Backpack TFBP126 Black Perfect as a carry-on bag for outdoor activity! Black, Tactical style duffel bag with hidden shoulder straps (in case, used as a backpack) Capacity: 3800 cu. in. Size: 26(Width) x 13(Height) x 11(Depth) MOLLE style straps, Heavy duty U-zipper