Waxed canvas, water-resistant exterior. Clean outside with two external pockets big enough for small stuff (keys, shades, iPhone X). Bottle pockets on both sides. Built-in, internally padded, 15" laptop and tablet compartments. Featuring a false bottom to protect your laptop from hitting the ground when your Duffleback does. Molded back panel for added support. Large zipper entrance to the Duffleback opens vertically, for easier access to your goodies.