I’ve seen this bag in person and it’s insane. A very clean, modern version of the military MOLLE system, done the Mission Workshop way. In this case, black waxed canvas:
“The R2 Field Packs allow for the secure and simple attachment of weatherproof accessories to the exterior of the bag. The Arkiv® modular system gives the bag freedom to evolve and adapt as needed. The R2 series is equipped with two Arkiv rails for a multitude of carry options in a minimalist design. Accessories range from simple cell phone pouches and tool pockets to larger organizers and laptop sleeves.”