The Duffalo is a weeklong, TSA-approved carry-on—minus the wheels. Inspired by The Brown Buffalo Founder Douglas Davidson's global trips, the 50-liter bag features a butterfly opening for easy access. For this exclusive release, we worked with The Brown Buffalo to cut this bag from Halley Stevensons waxed herringbone cotton twill that only gets better with age—the Scottish brand has been making fabric out of their workshop in Dundee since 1864. For the interior, you’ll notice a white-and-black x-grid material called X-Pac that’s water- and scratch-resistant, as well as highly visible. Once you travel with this bag, you’ll wonder if you ever want to use a roller case again.