Bontrager has your back with the Madtown Backpack. It keeps you organized with two zipped pockets big enough for water bottles, two external pockets, and an internal laptop sleeve that fits up to most 15-inch laptops. Plus, whether you fill the pack up or not, your shoulders will love the ergonomic padded shoulder straps.
Capacity: 1000 cubic inches
Dimensions: 17 x 15 x 3.9 inches