Crazy Ants 3 Days Military Hiking Camping Tactical Outdoor Travel Rucksack Backpack 40L 3 Days Military Rucksacks Shoulder bag 40L, 19.35"x9.4"x5.1" Great forOutdoor uses, Including Camping, Hiking, Hunting, Sports Events, School Supplies, Tools, etc. Way to Use: Dual shoulder, single shoulder, hand carry Rugged 1000D Denier Polyester construction with PVC lining, interior for laptop, ipad Molle web system, 2 small compartment on the front, 2 holders on the sides, and fast opening bottom