The ultimate on-your-back student or business organizer, the Brain Bag is our Slant-6 of backpacks: it will surprise you with its utility, versatility, and longevity. Long after lesser bags have frayed their seams, blown their zippers, and popped their straps, the Brain Bag will continue to be your faithful companion.
The Brain Bag consi
4.9
169 ratings
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For Work and Gym
I love this bag! I bought a Synapse 25 before I started my gym journey. The Brain Bag is perfect for my needs. Work items to include a laptop and notebooks with electronics. I use the over large pocket for the gym stuff with some packing cubes. The look is unique which is a plus. Mine is in Ursa and Emerald Ceylon and is the perfect color combo. Highly recommend.
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Chris · 3 days ago
Finally, a Big Bag That Doesn’t Feel Like Luggage
I really like this bag. It holds a ton, it’s super comfortable, and it doesn’t feel like a giant rigid box when it’s only half full. I’m a big fan of the softer, more unstructured shape.
The two main compartments are simple but really useful, and there are enough attachment points inside that I can organize things however I want instead of being stuck with a bunch of built-in pockets.
My only real gripe is that I wish it opened farther. I’ve gotten used to clamshell bags, and I definitely miss that sometimes.
Otherwise, it’s just a great backpack. Tons of room, comfortable even when loaded up, and easy to make your own with pouches and accessories. It’s become the bag I reach for most.
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Sam · September 20, 2026
So good I bought another one
This has been my go to bag for years. I worked as an AD on commercials and this bag held everything I needed through sun, rain and snow. It’s been a great travel bag and a work bag for days spent out and about. When my son need a backpack to use for some hiking he inherited (swiped) my original bag. After a few weeks I realized I needed another one.
I am in Canada so I am extremely thoughtful before buying anything made in the USA these days but there’s just nothing quite as good as a Tom Bihn bag. So an exception was made.