Doctor Who Tardis Army Sport Heavyweight Canvas Backpack Bag Heavyweight Cotton Canvas Zipper closure Padded Adjustable Shoulder Straps, Comfortable to Carry, Brass hardware 1 main compartment, 3 front zippered pouches, 2 side pockets with elastic and tie down straps Small holds a 12-inch laptop, Large holds a 15-inch laptop Great for School, Camping, Traveling, Hunting, Backpacking, going to the gym, and many more. Bag Dimensions: 15'' x 13.5" x 7" (Small), 18" x 13.5" x 7" (Large)