Tracksmith's collaboration with Mission Workshop builds on MW's classic Hauser 14L pack. It adds 4 liters of space in a larger main cavity, water bottle pockets, and pairs it the same hydration access and Tracksmith's signature look and feel. This is the perfect pack for hiking, trail running, a day trip to the beach, or heading to the coffee shop to do some work. It is by far the most versatile backpack I've ever used. And it pairs perfectly with the Camelbak Crux™ 3L water reservoir.