Undeniably, the duffel bag is a timeless carry staple that every man should own. But you'd be doing yourself a disservice by settling for anything other than the Arktype Boltpack, as this thing is one of the most impressive examples ever to be envisioned. Not only does it boast a generous 30 liters of internal space available by a simple YKK waterproof zipper, but it's also made of ultra-tough ballistic nylon that will keep everything inside safe and dry in any weather. Pair that with its host of heavy-duty hardware, mil-spec carry straps, waterproof external zippered pocket for quick-access to small items, and ladder-stitched external webbing for modular attachments and you've got one of the most comprehensively well-thought-out bags of all time. And it certainly doesn't hurt that it was made in the USA from American-sourced materials.