• visible variant TB0114-GKOL TB0114-GKGL TB0114-GKIJ TB0104-GKLJ TB0114-GKLJ^^A Brain Bag in Nebulous Grey (grey) Ballistic.
  • visible variant TB0114-GKOL^^The Brain Bag in Nebulous Grey Ballistic with a Cobalt 210 Cerylon interior.
  • visible variant TB0104-GKLJ TB0114-GKLJ^^The Brain Bag in Nebulous Grey (dark grey) 525 Ballistic with the front main compartment zipper opened to reveal its Cloud (light grey) 210 Ballistic interior.
  • Brain Bag
  • visible variant TB0104-MKLJ TB0114-MKLJ^^A Brain Bag in Mars Red (red) 525 Ballistic.
  • visible variant TB0104-MKLJ TB0114-MKLJ^^The Brain Bag in Mars Red 525 Ballistic with the front main compartment zipper opened to reveal its Cloud (light grey) 210 Ballistic interior.
  • visible variant TB0114-BKOL TB0114-BKPL^^A Brain Bag in Black Ballistic.
  • visible variant TB0114-BKOL^^The Brain Bag in Black Ballistic with the front main compartment zipper opened to reveal its Cobalt (blue with light blue grid) 210 Cerylon interior.
  • visible variant TB0114-BKPL^^The Brain Bag in Black Ballistic with the front main compartment zipper opened to reveal its Persimmon (dark orange with light orange grid) 210 Cerylon interior.
  • visible variant TB0114-BKGL^^A Brain Bag in Black Ballistic.
  • visible variant TB0114-BKGL^^The Brain Bag in Nebulous Grey (dark grey) Ballistic with the front main compartment zipper opened to reveal its Mountain Grey (grey with light grey grid) 210 Cerylon interior.
  • visible variant TB0104-LKDJ TB0114-LKDJ^^A Brain Bag in Cloud (light grey) 525 Ballistic.
  • visible variant TB0114-DKDL TB0114-DKGL TB0114-DKML^^A Brain Bag in Deep Blue (dark blue) Ballistic.
  • visible variant TB0114-DKDL^^The Brain Bag in Deep Blue (dark blue) 525 Ballistic with the front main compartment zipper opened to reveal its Dusk (purplish-blue with light purplish-blue grid) 210 Cerylon interior.
  • visible variant TB0114-DKGL^^The Brain Bag in Deep Blue (dark blue) 525 Ballistic with the front main compartment zipper opened to reveal its Mountain Grey (grey with light grey grid) 210 Cerylon interior.
  • visible variant TB0104-LKDJ TB0114-LKDJ^^The Brain Bag in Cloud (light grey) 525 Ballistic with the front main compartment zipper opened to reveal its Dawn (blue-grey) 210 Ballistic interior.\
  • visible variant TB0114-UKDL TB0114-UKGL TB0114-UKOL TB0114-UKIJ^^A Brain Bag in Aubergine (dark purple) Ballistic.
  • visible variant TB0114-UKGL^^A Brain Bag in Aubergine Ballistic with a Mountain Grey 210 Cerylon interior.
  • visible variant TB0114-UKDL^^A Brain Bag in Aubergine Ballistic with a Dusk (dark purple with purple grid) 210 Cerylon interior.
  • visible variant TB0104-TKLJ TB0114-TKLJ TB0114-TKGL TB0114-TKDL^^A Brain Bag in Burnt Orange Ballistic.
  • visible variant TB0114-TKGL^^The Brain Bag in Burnt Orange Ballistic with the front main compartment zipper opened to reveal its Mountain Grey (grey with light grey grid) 210 Cerylon interior.
  • visible variant TB0104-DKDJ TB0114-DKDJ^^The Brain Bag in Deep Blue (dark blue) 525 Ballistic with the front main compartment zipper opened to reveal its Dawn (blue-grey) 210 Ballistic interior.
  • visible variant TB0114-DKDL^^The Brain Bag in Deep Blue (dark blue) 630 Ballistic with the front main compartment zipper opened to reveal its Moss (green with light green grid) 210 Cerylon interior.
  • visible variant TB0114-DKML^^The Brain Bag in Deep Blue (dark blue) 525 Ballistic with the front main compartment zipper opened to reveal its Moss (green with light green grid) 210 Cerylon interior.
  • visible variant TB0114-CKGL TB0114-CKLJ^^A Brain Bag in Coyote (light brown) Ballistic.
  • visible variant TB0114-CKGL^^The Brain Bag in Coyote (light brown) Ballistic with the front main compartment zipper opened to reveal its Mountain Grey (grey with light grey grid) 210 Cerylon interior.
  • visible variant TB0114-WKGL TB0114-WKLJ^^A Brain Bag in Wilderness (forest green) Ballistic.
  • visible variant TB0114-WKGL^^The Brain Bag in Wilderness (forest green) Ballistic with the front main compartment zipper opened to reveal its Cloud (grey with light grey interior) 210 Cerylon interior.
  • visible variant TB0114-NKDJ^^A Brain Bag in Constellation (light blue) 525 Ballistic.
  • visible variant TB0114-NKDJ^^A profile shot of the Brain Bag in Constellation (light blue) 525 Ballistic.
  • visible variant TB0114-NKLJ^^The Brain Bag in Constellation (light blue) 525 Ballistic with the front main compartment zipper opened to reveal its Cloud (light grey) 210 Ballistic interior.
  • visible variant TB0114-RKML TB0114-RKGL TB0114-RKOL^^A Brain Bag in Ursa (greyish-brown) Ballistic.
  • visible variant TB0114-RKML^^The Brain Bag in Ursa (brown-grey) Ballistic with the front main compartment zipper opened to reveal its Moss (dark green with green grid) 210 Cerylon interior.
  • visible variant TB0114-RKOL^^The Brain Bag in Ursa (brown-grey) Ballistic with the front main compartment zipper opened to reveal its Cobalt (blue with light blue grid) 210 Cerylon interior.
  • visible variant TB0114-RKGL^^The Brain Bag in Ursa (brown-grey) Ballistic with the front main compartment zipper opened to reveal its Mountain (grey with light grey grid) 210 Cerylon interior.
  • visible variant TB0114-PKDL^^A Brain Bag in Raspberry Ballistic.
  • visible variant TB0114-PKDL^^The Brain Bag in Raspberry Ballistic with the front main compartment zipper opened to reveal its Dusk (purplish-blue with light blue grid) 210 Cerylon interior.
  • visible variant TB0114-VKPL^^A Brain Bag in Saguaro (olive green) Ballistic.
  • visible variant TB0114-VKPL^^The Brain Bag in Saguaro (olive green) Ballistic with the front main compartment zipper opened to reveal its Persimmon (dark orange with light orange grid) 210 Cerylon interior.
  • visible variant TB0114-RKGL TB0114-RKLJ^^A profile shot of the Brain Bag in Ursa (greyish-brown) 525 Ballistic.
  • visible detail^^A rear shot of the Brain Bag.
  • detail visible^^A close shot of one of the side cinches buckled up and cinched down.
  • detail visible^^A close shot of the top front cinch strap and d-ring between the front pockets.
  • detail visible^^A close shot of one of the zipper flaps.
  • detail visible^^A close shot of the d-ring on the front of the bag.
  • detail visible^^A close shot of the zipper pulls under the zipper flap.
  • lifestyle visible^^A person getting coffee at a coffee shop while wearing a Brain Bag.
  • lifestyle visible^^A tight shot of a person wearing the Brain Bag.
  • lifestyle visible^^A tight shot of the shoulder strap on a person wearing the Brain Bag.0
  • lifestyle visible^^A person accessing the front left zippered pocket in the Brain Bag.
  • lifestyle visible^^A person hiking wearing a Brain Bag.
  • lifestyle visible^^A person wearing a Brain Bag over one shoulder while drinking an iced beverage.
  • lifestyle visible^^Person wearing a Brain Bag and ordering coffee.
  • lifestyle visible^^A person wearing a Brain Bag over one shoulder while drinking an iced beverage.
  • visible video^^A thumbnail for a video showing off the features of the Brain Bag.
  • visible video^^A thumbnail for a video explaining the features of the Brain Bag.
  • visible variant TB0114-GKOL TB0114-GKGL TB0114-GKIJ TB0104-GKLJ TB0114-GKLJ^^A Brain Bag in Nebulous Grey (grey) Ballistic.
  • visible variant TB0114-GKOL^^The Brain Bag in Nebulous Grey Ballistic with a Cobalt 210 Cerylon interior.
  • visible variant TB0104-GKLJ TB0114-GKLJ^^The Brain Bag in Nebulous Grey (dark grey) 525 Ballistic with the front main compartment zipper opened to reveal its Cloud (light grey) 210 Ballistic interior.
  • Brain Bag
  • visible variant TB0104-MKLJ TB0114-MKLJ^^A Brain Bag in Mars Red (red) 525 Ballistic.
  • visible variant TB0104-MKLJ TB0114-MKLJ^^The Brain Bag in Mars Red 525 Ballistic with the front main compartment zipper opened to reveal its Cloud (light grey) 210 Ballistic interior.
  • visible variant TB0114-BKOL TB0114-BKPL^^A Brain Bag in Black Ballistic.
  • visible variant TB0114-BKOL^^The Brain Bag in Black Ballistic with the front main compartment zipper opened to reveal its Cobalt (blue with light blue grid) 210 Cerylon interior.
  • visible variant TB0114-BKPL^^The Brain Bag in Black Ballistic with the front main compartment zipper opened to reveal its Persimmon (dark orange with light orange grid) 210 Cerylon interior.
  • visible variant TB0114-BKGL^^A Brain Bag in Black Ballistic.
  • visible variant TB0114-BKGL^^The Brain Bag in Nebulous Grey (dark grey) Ballistic with the front main compartment zipper opened to reveal its Mountain Grey (grey with light grey grid) 210 Cerylon interior.
  • visible variant TB0104-LKDJ TB0114-LKDJ^^A Brain Bag in Cloud (light grey) 525 Ballistic.
  • visible variant TB0114-DKDL TB0114-DKGL TB0114-DKML^^A Brain Bag in Deep Blue (dark blue) Ballistic.
  • visible variant TB0114-DKDL^^The Brain Bag in Deep Blue (dark blue) 525 Ballistic with the front main compartment zipper opened to reveal its Dusk (purplish-blue with light purplish-blue grid) 210 Cerylon interior.
  • visible variant TB0114-DKGL^^The Brain Bag in Deep Blue (dark blue) 525 Ballistic with the front main compartment zipper opened to reveal its Mountain Grey (grey with light grey grid) 210 Cerylon interior.
  • visible variant TB0104-LKDJ TB0114-LKDJ^^The Brain Bag in Cloud (light grey) 525 Ballistic with the front main compartment zipper opened to reveal its Dawn (blue-grey) 210 Ballistic interior.\
  • visible variant TB0114-UKDL TB0114-UKGL TB0114-UKOL TB0114-UKIJ^^A Brain Bag in Aubergine (dark purple) Ballistic.
  • visible variant TB0114-UKGL^^A Brain Bag in Aubergine Ballistic with a Mountain Grey 210 Cerylon interior.
  • visible variant TB0114-UKDL^^A Brain Bag in Aubergine Ballistic with a Dusk (dark purple with purple grid) 210 Cerylon interior.
  • visible variant TB0104-TKLJ TB0114-TKLJ TB0114-TKGL TB0114-TKDL^^A Brain Bag in Burnt Orange Ballistic.
  • visible variant TB0114-TKGL^^The Brain Bag in Burnt Orange Ballistic with the front main compartment zipper opened to reveal its Mountain Grey (grey with light grey grid) 210 Cerylon interior.
  • visible variant TB0104-DKDJ TB0114-DKDJ^^The Brain Bag in Deep Blue (dark blue) 525 Ballistic with the front main compartment zipper opened to reveal its Dawn (blue-grey) 210 Ballistic interior.
  • visible variant TB0114-DKDL^^The Brain Bag in Deep Blue (dark blue) 630 Ballistic with the front main compartment zipper opened to reveal its Moss (green with light green grid) 210 Cerylon interior.
  • visible variant TB0114-DKML^^The Brain Bag in Deep Blue (dark blue) 525 Ballistic with the front main compartment zipper opened to reveal its Moss (green with light green grid) 210 Cerylon interior.
  • visible variant TB0114-CKGL TB0114-CKLJ^^A Brain Bag in Coyote (light brown) Ballistic.
  • visible variant TB0114-CKGL^^The Brain Bag in Coyote (light brown) Ballistic with the front main compartment zipper opened to reveal its Mountain Grey (grey with light grey grid) 210 Cerylon interior.
  • visible variant TB0114-WKGL TB0114-WKLJ^^A Brain Bag in Wilderness (forest green) Ballistic.
  • visible variant TB0114-WKGL^^The Brain Bag in Wilderness (forest green) Ballistic with the front main compartment zipper opened to reveal its Cloud (grey with light grey interior) 210 Cerylon interior.
  • visible variant TB0114-NKDJ^^A Brain Bag in Constellation (light blue) 525 Ballistic.
  • visible variant TB0114-NKDJ^^A profile shot of the Brain Bag in Constellation (light blue) 525 Ballistic.
  • visible variant TB0114-NKLJ^^The Brain Bag in Constellation (light blue) 525 Ballistic with the front main compartment zipper opened to reveal its Cloud (light grey) 210 Ballistic interior.
  • visible variant TB0114-RKML TB0114-RKGL TB0114-RKOL^^A Brain Bag in Ursa (greyish-brown) Ballistic.
  • visible variant TB0114-RKML^^The Brain Bag in Ursa (brown-grey) Ballistic with the front main compartment zipper opened to reveal its Moss (dark green with green grid) 210 Cerylon interior.
  • visible variant TB0114-RKOL^^The Brain Bag in Ursa (brown-grey) Ballistic with the front main compartment zipper opened to reveal its Cobalt (blue with light blue grid) 210 Cerylon interior.
  • visible variant TB0114-RKGL^^The Brain Bag in Ursa (brown-grey) Ballistic with the front main compartment zipper opened to reveal its Mountain (grey with light grey grid) 210 Cerylon interior.
  • visible variant TB0114-PKDL^^A Brain Bag in Raspberry Ballistic.
  • visible variant TB0114-PKDL^^The Brain Bag in Raspberry Ballistic with the front main compartment zipper opened to reveal its Dusk (purplish-blue with light blue grid) 210 Cerylon interior.
  • visible variant TB0114-VKPL^^A Brain Bag in Saguaro (olive green) Ballistic.
  • visible variant TB0114-VKPL^^The Brain Bag in Saguaro (olive green) Ballistic with the front main compartment zipper opened to reveal its Persimmon (dark orange with light orange grid) 210 Cerylon interior.
  • visible variant TB0114-RKGL TB0114-RKLJ^^A profile shot of the Brain Bag in Ursa (greyish-brown) 525 Ballistic.
  • visible detail^^A rear shot of the Brain Bag.
  • detail visible^^A close shot of one of the side cinches buckled up and cinched down.
  • detail visible^^A close shot of the top front cinch strap and d-ring between the front pockets.
  • detail visible^^A close shot of one of the zipper flaps.
  • detail visible^^A close shot of the d-ring on the front of the bag.
  • detail visible^^A close shot of the zipper pulls under the zipper flap.
  • lifestyle visible^^A person getting coffee at a coffee shop while wearing a Brain Bag.
  • lifestyle visible^^A tight shot of a person wearing the Brain Bag.
  • lifestyle visible^^A tight shot of the shoulder strap on a person wearing the Brain Bag.0
  • lifestyle visible^^A person accessing the front left zippered pocket in the Brain Bag.
  • lifestyle visible^^A person hiking wearing a Brain Bag.
  • lifestyle visible^^A person wearing a Brain Bag over one shoulder while drinking an iced beverage.
  • lifestyle visible^^Person wearing a Brain Bag and ordering coffee.
  • lifestyle visible^^A person wearing a Brain Bag over one shoulder while drinking an iced beverage.
  • visible video^^A thumbnail for a video showing off the features of the Brain Bag.
  • visible video^^A thumbnail for a video explaining the features of the Brain Bag.

Brain Bag

$245

Ready to Ship

A serious backpack that can fit two (or more) laptops.

What Goes Into A Tom Bihn Backpack?

Each bag is handmade in the U.S. using premium, hard-wearing materials—and built to last a lifetime, guaranteed. You're not just buying a bag, you're investing in decades of thoughtful design, durable function, and responsible craftsmanship.


Color & Material
Available Color options

Exterior Color:
Black
Interior Color:
Mountain Grey
Exterior Material:
Ballistic
Interior Material:
210 Cerylon


Carry-on Friendly
Made in Seattle
Lifetime Guarantee

Brain Bag

Join the Waitlist!

Description

The Brain Bag debuted in 1996 and its design has stood the test of time. 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.

Reviews

4.9
Rated 4.9 out of 5 stars
Based on 168 reviews
Total 5 star reviews: 157 Total 4 star reviews: 6 Total 3 star reviews: 3 Total 2 star reviews: 2 Total 1 star reviews: 0
168 reviews
  • RR
    Robert R.
    Verified Buyer
    Bought For Myself
    Product Standouts Thoughtful Design, High Quality Craftsmanship, Sewn in USA, Good Storage Size, Comfortable
    3 years ago
    Bought For Myself
    Product Standouts Thoughtful Design, High Quality Craftsmanship, Sewn in USA, Good Storage Size, Comfortable
    Rated 5 out of 5 stars
    The Brain Bag is a No-Brainer!

    Even though I had known about Tom Bihn for a while, I had mainly focussed on the Aeronaut 30 & 45 and then discovered the Synic 30. However, I really needed to replace a backpack with closer to 40 Liter capacity. I already own a 46 Liter (maximum carry-on, duffel-style size) bag, so I didn't need another one. I guess I really developed "tunnel-vision" because I didn't notice the Brain Bag until I was very close to my departure date. I'm sure glad I found it though! With a Basic Economy ticket from Raleigh, NC to San Francisco and back, I figured I'd be among the last to board and would have difficulty finding a spot for a roll-aboard bag. It might need to ride under the seat in front of me. One-bag travel looked like the way to go on this trip. Well, while those fears were not realized, the Brain Bag was ready to deliver. With its 36 Liter capacity, I carried clothes for 3 days+, a compact umbrella, N/C over-ear headphones, a fluffy neck pillow, & snacks (including a pair of 1/2 lb. bags of beef jerky, ha ha) all inside the Brain Bag. Total weight, including the Brain Bag, was about 22 lbs. With the 2 separate main compartments (a feature that I have searched for for a long time, BTW), I was able to organize my things very well, making accessibility a breeze. Actually, I used a 12 Liter Fanny Pack to organize my iPad, Tom Bihn Small Snake Charmer, 25000maH battery, snacks, sunglasses, hand sanitizer, etc. into one unit. I simply slipped the 12 Liter pack in and…

  • YW
    Yuchang W.
    Verified Buyer
    Bought For Myself
    Product Standouts Comfortable, High Quality Craftsmanship, Durable, Compact, Good Storage Size
    1 year ago
    Bought For Myself
    Product Standouts Comfortable, High Quality Craftsmanship, Durable, Compact, Good Storage Size
    Rated 4 out of 5 stars
    Almost perfect all-around bag: EDC, work, gym, or travel

    Overall I think this is a great bag. Things I like:

    1. Looks good. Unlike other TB bags, this one looks quite rugged but also unassuming.

    2. Great materials and feels good.

    3. Comfortable to carry even when for heavy load.

    4. Spacious. I used it to carry all my EDC and work stuff and gym clothes.

    5. I like the quick access pocket on the top. I live in the north and now it's winter, so I put moisturizing lotion and lip balm in this pocket since I need to use them several times a day. Convenient. One-zip operation.

    6. Compression straps making the bag look not too bulky.

    7. IT COULD STAND! Grabbing things is much easier and enjoyable.

    Things I don't like:

    1. The two big front pockets are not very accessible. In theory, they're; but in practical, they are not as assessable as the pockets in Synapse or Synik bags. The reasons are i) the pockets are too tall and thus could not use the space efficiently and ii) they share some volume with the big compartment thus may not have enough depth. In practice, I find it not easy to grab items from these two pockets. Additionally, the organizations within the two front big pockets are not very useable -- at least for me. The pen loops are too narrow for a fountain pen or a small flash or a multi tool. Right now, these two big pockets are mostly empty. I only put a hand sanitizer, a pen pouch (but I don't like a pouch within a pouch), and my keys.

    2. No organizations at all for the two big compartments. This might be good for travel if…

  • D
    Darcy
    4 years ago
    Rated 5 out of 5 stars
    Best backpack *ever*

    I bought this bag on the recommendation of a friend during a trip to the US. I've been using this bag for the past 16 years, and it still looks like new. The zippers all work fine, there are no rips or tears, and with the exception of a single buckle that I broke while closing it in a car door (that I have since replaced), this backpack functions like the day that I bought it. I cannot recommend this backpack enough. I would be more than happy to purchase another one of these bags, but I highly doubt that this one will wear out before I retire (easily another 16 years). This bag is awesome to travel to conferences with, as you can use the backpack for all your stuff, but still pull out the smaller laptop bag for meetings and the like. I consider this bag "buy it for life".

  • T
    Tim
    Verified Buyer
    Bought For Myself
    Product Standouts High Quality Craftsmanship, Sewn in USA, Durable, High Quality Finishings, Good Storage Size
    10 months ago
    Bought For Myself
    Product Standouts High Quality Craftsmanship, Sewn in USA, Durable, High Quality Finishings, Good Storage Size
    Rated 5 out of 5 stars
    Finally, a well made backpack!

    I looked for years to find a sturdy and reliable bag that was well made and would last through my travels. This backpack is extraordinary. Everything I have been looking for!

    So far I have taken to Spain, Morroco and Mexico in some harsh environments and it is perfect. The zippers are high quality and the material is excellent. I couldn't be happier and I will be buying another smaller one for short trips.

  • FP
    Fred P.
    Verified Buyer
    Bought For Myself
    Product Standouts Comfortable, Thoughtful Design, Good Storage Size, High Quality Craftsmanship
    5 months ago
    Bought For Myself
    Product Standouts Comfortable, Thoughtful Design, Good Storage Size, High Quality Craftsmanship
    Rated 5 out of 5 stars
    Phenomenal Bag

    After about a year with a Synik 30, I started to want something that fit just a bit different. I couldn't describe what was wrong, as up until this Brain Bag, the Synik 30 was my favorite backpack I'd ever owned. I kept looking at the Brain Bag, and finally purchased one to see (even though it was technically bigger than my Synik 30) if it would be better for my EDC.

    Within a week, the Brain Bag has moved to my number one all time favorite bag. I do miss a little of the organization of the Synik, but the Brain Bag has a ton of amazing organization on its own. I keep getting surprised as to what can fit in those front pockets.

    Some call this bag a beast... I just don't see it like that. Sure, its ability to swallow anything I ask it to contstantly amazes me... but yet, it feels more compact than others. Very comfortable even at heavy weight and the handle... wow... just perfect.

    Make yourself happy and get some strap keepers (2 pair at least) as this bag does have some dangle to contain. This said, the strap keepers work perfectly to contain the compression straps and the sternum/umbrella were handled with some rip cord.

    Phenomenal bag. Looking forward to many long years with my new favorite bag.

Quality Designs Since 1972

Designed with obsessive attention to detail, we pride ourselves in offering bags in unmatched quality and durability—whether you're commuting, traveling, or navigating daily life. Built to endure, made to move with you.

The BIHN Guarantee

We stand behind every bag we make. If it’s our fault, we’ll fix it—no questions asked. For everything else, we offer honest repairs in our Seattle factory.