Known for their meticulous recreations of vintage military jackets, Buzz Rickson has partnered up with Porter to bring its aesthetic to a new backpack. Inspired by the MA-1, the bag is constructed from a custom Buzz Rickson nylon exterior and features anodized zippers, a heavy nylon base, custom MA-1 accents, and a ton of pockets for all your gear. It also has an interior sleeve for your laptop or tablet and comes in sage green or black. 

$695, selfedge.com