The Synapse 19 in Deep Blue (dark blue) 525 Ballistic. The Synapse 19 in Deep Blue 525 Ballistic with Mountain Grey (grey with light grey grid) 210 Cerylon interior. The Synapse 19 in Deep Blue (dark blue) 525 Ballistic with Zest (orange with white grid) 200 Halcyon interior. The Synapse 19 in Nebulous Grey (medium grey) 525 Ballistic. The Synapse 19 in Nebulous Grey (medium grey) 525 Ballistic with Northwest Sky (light grey with white grid) 200 Halcyon interior. The Synapse 19 in Nebulous Grey (medium grey) 525 Ballistic with Island (bright blue with white grid) 200 Halcyon interior. The Synapse 19 in Nebulous Grey (medium grey) 525 Ballistic with Island (blue with white grid) 200 Halcyon interior. The Synapse 19 in Burnt Orange 525 Ballistic. The Synapse 19 in Burnt Orange 525 Ballistic with Mountain Grey (grey with light grey grid) 210 Cerylon interior. The Synapse 19 in Burnt Orange 525 Ballistic with Northwest Sky (light grey with white grid) 200 Halcyon interior. The Synapse 19 in Black 525 Ballistic. The Synapse 19 in Black 525 Ballistic with Island (bright blue with white grid) 200 Halcyon interior. The Synapse 19 in Black 525 Ballistic. The Synapse 19 in Black 525 Ballistic with Northwest Sky (light grey with white grid) 200 Halcyon interior. The Synapse 19 in Black 525 Ballistic with Moab (brick red with white grid) 200 Halcyon interior. A profile shot of the Synapse 19 in Black 525 Ballistic. The Synapse 19 in Cloud (light grey) 525 Ballistic. The Synapse 19 in Cloud (light grey) 525 Ballistic with Island (bright blue with white grid) 200 Halcyon interior. The Synapse 19 in Cloud (light grey) 525 Ballistic with Ultraviolet (purple with white grid) 200 Halcyon interior. The Synapse 19 in Cloud (light grey) 525 Ballistic with Ultraviolet (blue with white grid) 200 Halcyon interior. A profile shot of the Synapse 19 in Cloud (light grey) 525 Ballistic. The Synapse 19 in Deep Blue (dark blue) 525 Ballistic with Ultraviolet (purple with white grid) 200 Halcyon interior. The Synapse 19 in Deep Blue (dark blue) 525 Ballistic with Wasabi (green with white grid) 200 Halcyon interior. visible variant A profile shot of the Synapse 19 in Deep Blue (dark blue) 525 Ballistic. The Synapse 19 in Mars Red 525 Ballistic. The Synapse 19 in Aubergine (dark purple) 525 Ballistic. The Synapse 19 in Aubergine (dark purple) 525 Ballistic with Mountain Grey (grey with light grey grid) 210 Cerylon interior. The Synapse 19 in Aubergine (dark purple) 525 Ballistic with Northwest Sky (light grey with white grid) 200 Halcyon interior. The Synapse 19 in Mars Red 525 Ballistic with Northwest Sky (light grey with white grid) 200 Halcyon interior. The Synapse 19 in Coyote (brown) 525 Ballistic with Mountain Grey (grey with light grey grid) 210 Cerylon interior. The Synapse 19 in Coyote (brown) 525 Ballistic. The Synapse 19 in Coyote (brown) 525 Ballistic with Northwest Sky (light grey with white grid) 200 Halcyon interior. The Synapse 19 in Wilderness (forest green) 525 Ballistic. The Synapse 19 in Wilderness (forest green) 525 Ballistic with Mountain Grey (grey with light grey grid) 210 Cerylon interior. The Synapse 19 in Constellation (light blue) 525 Ballistic. The Synapse 19 in Constellation (light blue) 525 Ballistic with Mountain Grey (grey with light grey grid) 210 Cerylon interior. The Synapse 19 in Ursa (brown-grey) 525 Ballistic. The Synapse 19 in Ursa (brown-grey) 525 Ballistic with Northwest Sky (light grey with white grid) 200 Halcyon interior. The Synapse 19 in Wilderness (forest green) 525 Ballistic with Moab (brick red with white grid) 200 Halcyon interior. The Synapse 19 in Wilderness (forest green) 525 Ballistic with Northwest Sky (light grey with white grid) 200 Halcyon interior. The Synapse 19 in Constellation (light blue) 525 Ballistic with Northwest Sky (light grey with white grid) 200 Halcyon interior. The Synapse 19 in Original (black with white grid) 400 Halcyon. The Synapse 19 in Original (black with white grid) 400 Halcyon with Iberian (red with white grid) 200 Halcyon interior. The Synapse 19 in Original (black with white grid) 400 Halcyon with Wasabi (green with white grid) 200 Halcyon interior. The Synapse 19 in Original (black with white grid) 400 Halcyon with Island (blue with white grid) 200 Halcyon interior. The Synapse 19 in Black (black with grey grid) 400 Halcyon. The Synapse 19 in Black (black with grey grid) 400 Halcyon with Northwest Sky (light grey with white grid) 200 Halcyon interior. The Synapse 19 in Black (black with grey grid) 400 Halcyon with Island (blue with white grid) 200 Halcyon interior. The Synapse 19 in Taiga 400d Halcyon. The Synapse 19 in Taiga 400d Halcyon with Northwest Sky (light grey with white grid) 200 Halcyon interior. The Synapse 19 in Night Walk (grey-blue with grey grid) 400d Halcyon The Synapse 19 in Night Walk (grey-blue with grey grid) 400d Halcyon with Northwest Sky (light grey with white grid) 200 Halcyon interior. The Synapse 19 in Red Blend (purplish red) 1000 Cordura The Synapse 19 in Red Blend (purplish red) 1000 Cordura with Dawn (blue-grey) 210 Ballistic interior. The Synapse 19 in Beaver Camo (olive green, brown, black, and tan camoflauge pattern) 1000 Cordura The Synapse 19 in Beaver Camo (olive green, brown, black, and tan camoflauge pattern) 1000 Cordura with Coyote (tan) 210 Ballistic interior. The Synapse 19 in Seapine (blue-green) 630 Recycled The Synapse 19 in Seapine (blue-green) 630 Recycled with Northwest Sky (light grey with white grid) 200 Halcyon interior. The Synapse 19 in Logic (powder blue) 630 Recycled The Synapse 19 in Logic (powder blue) 630 Recycled with Northwest Sky (light grey with white grid) 200 Halcyon interior.
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Synapse 19

$225.00

A backpack well suited to hiking, travel, or commuting.

19 liters / 1160 cu.in.

Deep Blue Ballistic/Zest 200 Halcyon
Aubergine Ballistic/Mountain Grey 210 Cerlyon
Black Ballistic/Zest 200 Halcyon
Burnt Orange Ballistic/Mountain Grey 210 Cerylon
Cloud Ballistic/Fjord 200 Halcyon
Constellation Ballistic/Mountain Grey 210 Cerylon
Coyote Ballistic/Mountain Grey 210 Cerylon
Wilderness Ballistic/Mountain Grey 210 Cerylon
Beaver Camo 1000 Texturized Nylon/Coyote 210 Ballistic
Black Ballistic/Island 200 Halcyon
Black Ballistic/Northwest Sky 200 Halcyon
Deep Blue Ballistic/Mountain Grey 210 Cerylon
Nebulous Grey Ballistic/Island 200 Halcyon
Wilderness Ballistic/Moab 200 Halcyon
Black 400 Halcyon/Island 200 Halcyon
Night Walk 400 Halcyon/Northwest Sky 200 Halcyon
Original 400 Halcyon/Island 200 Halcyon
Taiga 400 Halcyon/Northwest Sky 200 Halcyon

TLDR

The Synapse 19 is the supreme backpack for everyday carry, ultralight travel, or a day hike. You'll be able to carry more than you would imagine, but it's perfect for those who just don't need to carry as much stuff.

  • Comfortable, durable, edgeless straps
  • Water bottle pocket with O-ring
  • Front pocket with O-ring for keys, a wallet, or a small camera
  • Left pocket with pen/pencil slot and 2 wide slots
  • Right pocket with small organizational pocket
  • Bottom front pocket for extra clothing or snacks
  • 1.5"/38 mm webbing loop on exterior bottom of bag to hook on a small flashlight
  • Flexible main compartment for laptop/tablet (check fit guide) with 4 unobtrusive webbing loops on the inside for attaching optional Cache (no integrated laptop sleeve) or Size 1 Handy Little Thing
  • 2 O-rings inside the main compartment for additional organizational pouches, if needed
  • Meets the personal item requirement on most airlines

If you love the design of the Synapse 19, but want a bigger version, check out the Synapse 25.

Full Description

The graceful, curvilinear exterior of the Synapse 19 may at first look like something akin to sculpture, but in truth it is simply the judicious realization of ultimate utility. No mesh pockets clutter the exterior of this bag, nor extraneous straps festoon it; in it, you'll be able to carry more than you would imagine, and no one will be the wiser.

Five Front Exterior Organizational Pockets

All five pockets are zipped shut with #8 YKK® Racquet-Coil water-repellent zippers:

The top center pocket is deep enough to fit a 1L water bottle or hydration bladder. Removing the water bottle is super easy since the pocket doesn't continue to the bottom of the bag. By having a heavier object in the middle, the carrying experience is more comfortable since everything becomes balanced.

Below the opening for the bottle pocket is another small zippered pocket, also with one O-ring; it's just deep enough for keys, a wallet, glove liners, or a small camera.

The side pockets are generously sized for sunglasses (in a case or alone), a first aid kit, or even a light Windbreaker-type jacket or down vest compressed in a stuff sack (like our Travel Stuff Sack). The right side pocket has a small organizational pocket; the left pocket has one pen/pencil slot and two wider slots for multitools/knives or just more pens. Both side zippered pockets feature one O-ring — one comes with an 8"/200 mm Key Strap.

The bottom front pocket of the Synapse 19 is a great spot for extra clothing or snacks and will easily accommodate a thin wool/fleece sweater, light down jacket and/or Windbreaker-type jacket. If you care to add organization, it's more than big enough for a 3D Organizer Cube or Side Effect. And because we care about your safety, we've added a 1.5"/38 mm webbing loop on the exterior bottom of this pocket that's ready to accept a flashlight — highly recommended if you ride a bicycle or walk in the dark.

Main Compartment

The main compartment is designed to fit large, flat items like notebooks or laptops — it closes with a #10 YKK® Racquet-Coil zipper. It has two O-rings for you to attach Organizer Pouches or Key Straps or tether other items. Four unobtrusive webbing loops can also secure the Cache. The remaining space in the main compartment opens wide.

Interior Banded Open-Top Pocket

Also inside the main compartment is an elastic-topped, open-top pocket. It's suitable for storing a few books, an extra pair of shoes, a Size 2 Handy Little Thing, or a Tri-Star Medium Packing Cube. Some sizes of the Cache will also fit inside this pocket.

Breathable Back Panel

The back panel of the Synapse 19 is padded with 1/4", high quality, closed cell-foam with an exterior of Spacer mesh and 210 denier nylon. This combination of mesh and smooth nylon is designed to provide maximum breathability while still being gentle on your clothing.

Included Removable Sternum Strap + Waist Strap

As with all of our major backpacks, we include adjustable and removable sternum and waist straps: if you don't like or don't use your waist or sternum strap, remove them and leave (almost) nothing behind. There's also an optional 1" Padded Hip Belt.

Edgeless Straps

Conformity is overrated — except, perhaps, when it comes to shoulder straps. The edgelessness of this new strap allows it to more softly conform to your shoulder — we (and most people who have worn these straps) find that this increases comfort. Yet the straps aren't too soft: the 1/2" thick EVAZOTE® OEKO-TEX® certified foam means the strap is robust enough to carry a heavy load.

Durable Materials + Expert Construction

No bag lasts forever, but choosing the best and most durable materials and taking care not to abuse it (no washing machine or dryer!) can help a quality bag serve most people well (with maybe a repair or two) for up to 10-20 years.

For the interior lining of the Synapse 19, we offer variations in 200d Halcyon or 210d Cerylon, both ultra-lightweight and ultra-tough. They have been abrasion tested by both our fabric suppliers and our in-house lab. Conclusion? 200d Halcyon and 210d Cerylon are perhaps a bit overkill for a lining fabric, and you expect nothing less from us.

This bag requires significant skill to sew and construct; it's not just any sewing factory who can pull this off and do it well, it's ours, and it's because of the talent of our crew. They're the reason why our designs can be made in an ongoing practical fashion.

Five Front Exterior Organizational Pockets

All five pockets are zipped shut with #8 YKK® Racquet-Coil water-repellent zippers:

The top center pocket is deep enough to fit a 1L water bottle or hydration bladder. Removing the water bottle is super easy since the pocket doesn't continue to the bottom of the bag. By having a heavier object in the middle, the carrying experience is more comfortable since everything becomes balanced.

Below the opening for the bottle pocket is another small zippered pocket, also with one O-ring; it's just deep enough for keys, a wallet, glove liners, or a small camera.

The side pockets are generously sized for sunglasses (in a case or alone), a first aid kit, or even a light Windbreaker-type jacket or down vest compressed in a stuff sack (like our Travel Stuff Sack). The right side pocket has a small organizational pocket; the left pocket has one pen/pencil slot and two wider slots for multitools/knives or just more pens. Both side zippered pockets feature one O-ring — one comes with an 8"/200 mm Key Strap.

The bottom front pocket of the Synapse 19 is a great spot for extra clothing or snacks and will easily accommodate a thin wool/fleece sweater, light down jacket and/or Windbreaker-type jacket. If you care to add organization, it's more than big enough for a 3D Organizer Cube or Side Effect. And because we care about your safety, we've added a 1.5"/38 mm webbing loop on the exterior bottom of this pocket that's ready to accept a flashlight — highly recommended if you ride a bicycle or walk in the dark.

Main Compartment

The main compartment is designed to fit large, flat items like notebooks or laptops — it closes with a #10 YKK® Racquet-Coil zipper. It has two O-rings for you to attach Organizer Pouches or Key Straps or tether other items. Four unobtrusive webbing loops can also secure the Cache. The remaining space in the main compartment opens wide.

Interior Banded Open-Top Pocket

Also inside the main compartment is an elastic-topped, open-top pocket. It's suitable for storing a few books, an extra pair of shoes, a Size 2 Handy Little Thing, or a Tri-Star Medium Packing Cube. Some sizes of the Cache will also fit inside this pocket.

Breathable Back Panel

The back panel of the Synapse 19 is padded with 1/4", high quality, closed cell-foam with an exterior of Spacer mesh and 210 denier nylon. This combination of mesh and smooth nylon is designed to provide maximum breathability while still being gentle on your clothing.

Included Removable Sternum Strap + Waist Strap

As with all of our major backpacks, we include adjustable and removable sternum and waist straps: if you don't like or don't use your waist or sternum strap, remove them and leave (almost) nothing behind. There's also an optional 1" Padded Hip Belt.

Edgeless Straps

Conformity is overrated — except, perhaps, when it comes to shoulder straps. The edgelessness of this new strap allows it to more softly conform to your shoulder — we (and most people who have worn these straps) find that this increases comfort. Yet the straps aren't too soft: the 1/2" thick EVAZOTE® OEKO-TEX® certified foam means the strap is robust enough to carry a heavy load.

Durable Materials + Expert Construction

No bag lasts forever, but choosing the best and most durable materials and taking care not to abuse it (no washing machine or dryer!) can help a quality bag serve most people well (with maybe a repair or two) for up to 10-20 years.

For the interior lining of the Synapse 19, we offer variations in 200d Halcyon or 210d Cerylon, both ultra-lightweight and ultra-tough. They have been abrasion tested by both our fabric suppliers and our in-house lab. Conclusion? 200d Halcyon and 210d Cerylon are perhaps a bit overkill for a lining fabric, and you expect nothing less from us.

This bag requires significant skill to sew and construct; it's not just any sewing factory who can pull this off and do it well, it's ours, and it's because of the talent of our crew. They're the reason why our designs can be made in an ongoing practical fashion.

Materials

Specs

Dimensions

11.4" (w) x 16" (h) x 7.9" (d) / 290 (w) x 410 (h) x 200 (d) mm

Weight

400d Halcyon/420d nylon ripstop: 1 lb 9 oz / 708 grams
525d Ballistic: 1 lb 11 oz / 752 grams

Volume

19 liters / 1160 cubic inches (ASTM Standard Measure)

Total O-Rings

8 (2 in the main compartment; 1 in the top center pocket, 1 in the small center pocket, 2 in the bottom front pocket; 1 in the left front pocket; 1 in the right front pocket)

Lifetime guarantee image

Sewn in Seattle

Our bags are designed and sewn right here in Seattle, Washington, U.S.A.

That allows us to be control freaks in the best way possible; we have direct control and oversight of the quality of our materials, our products, and the jobs and working environment that we help create. It also offers us a unique spontaneity: when we have an idea for a new product or accessory, we can design it, figure out how to build it, add it to our website and be ready to ship it out our front door all within just a few weeks. How cool is that?

Intrigued? You can find out more about the unusual way we do business on our Company Philosophy page.

THE BIHN Guarantee

Everything you buy from us here at TOM BIHN is satisfaction guaranteed. We’ve been in business since 1972 and we stand behind what we make.

If something goes wrong and it's our fault, we'll fix it for free. Repairs due to normal wear and tear or due to other things that are not our fault will be performed, when possible, at a reasonable charge right here in our Seattle factory where your bag was made. Defects in materials or workmanship are uncommon and almost always evident while the product is still new. Keep in mind that bags and packs are often subject to extreme wear in everyday use: do not expect them to last forever. Only true love lasts forever! You can expect a TOM BIHN product to give years and years of hard service.

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4.9
Rated 4.9 stars
Based on 87 reviews
100%would recommend this product
87 reviews
  • Reanna W.
    Verified Reviewer
    Bought For Myself
    Product Standouts Thoughtful Design, Comfortable, High Quality Craftsmanship, Durable, Sewn in USA
    6 months ago
    Bought For Myself
    Product Standouts Thoughtful Design, Comfortable, High Quality Craftsmanship, Durable, Sewn in USA
    Rated 5 stars
    Only backpack I ever need

    Just wanted to stop by and say how much I still love this bag 5 years later. This is my go to bag for any and all occasions and has held up flawlessly. I’ve taken it on short and longer trips as my only bag, as a daily carry for my work laptop, on any hikes I’ve been on etc. I tried quite a few different backpacks last year to try something new for aesthetics, but nothing compares for comfort, quality, durability and most of all functionality. If something ever happens to my current one I will either have it fixed by TB or get another of the same style. The pockets are so well thought out and a place for everything. Love that it’s water resistant as well and never shows dirt (other than the straps a little since they’re black, but just clean off with water/rag) Attached some pics from adventures with Synapse 19 over the years :) - Also, gotta love that TB products are made in USA, that is a huge plus for me.

    TB Profile picture for TOM BIHN
    TOM BIHN
    6 months ago

    Thank you so much for taking the time to stop by and leave such a kind review! And for the lovely pictures :)

  • Captain G.
    1 year ago
    Rated 5 stars
    Your search is over - A disabled user’s perspective.

    After going through about 8 different bags over the years, I finally found one that works. I’ve had the Halcyon Synapse 19 right at two years now, and it still looks nearly brand new and it’s gone everywhere with me since. As noted in the title, I’m disabled and use crutches to get around. My hands are full all the time, so carrying things has never been a strong suit of mine. Coupled with the ever-shrinking pockets in jeans and the increasing amount of stuff one needs to have at hand daily, everyone needs a bag these days. The more gimpy among us included.

    I wear mine backwards and even fully loaded (for me, 15-20lbs) this bag stays perfectly balanced. I’ve not once felt unsteady with it even at its heaviest.

    It holds everything I need for a typical outing and the pockets are easily accessible with one hand. I’m not sure what magic they worked into the materials, but this bag does - not - age. I’m not outright abusive toward this bag, but I don’t baby it either. It gets thrown around; tossed in the bed of the truck; friends’ kids drag it here and there and there’s not so much as a loose thread on the outside. The only noticeable sign of wear is on the mesh back where the zippers of my coat have chewed at it a bit.

    The price has increased some since I bought mine, but if I had to buy this again tomorrow - my rainbow of organizer pouches, zipper pulls and frame included, I’d not think twice about it.

    You can stop debating now. It’ll be the best bag you’ve ever owned.

  • Reanna W.
    Verified Buyer
    Bought For Myself
    Product Standouts Thoughtful Design, Comfortable, High Quality Craftsmanship, Sewn in USA, Unique
    3 months ago
    Bought For Myself
    Product Standouts Thoughtful Design, Comfortable, High Quality Craftsmanship, Sewn in USA, Unique
    Rated 5 stars
    Even better than the original!

    I've had a classic Synapse 19 since Summer of 2017 and it had the original straps, handle, zippers etc. While I love that bag to death and it holds a special place in my heart forever, I am thrilled with the small updates that have been made! I got a new black Synapse 19 in ballistic with the blue island interior. The zippers feel SOOO much smoother and easier to open/close than my older bag. And the new straps are very soft, which is nice when wearing a tank top. Couldn't reccomend this bag enough :) Will be keeping my old one for hikes now to keep the black clean for work/travel.

  • Anne H.
    Verified Buyer
    Bought For Myself
    Product Standouts High Quality Finishings, Durable, Good Storage Size, Comfortable, Thoughtful Design
    5 months ago
    Bought For Myself
    Product Standouts High Quality Finishings, Durable, Good Storage Size, Comfortable, Thoughtful Design
    Rated 5 stars
    Fantastic Daily and Travel Backpack

    I had a Fjallraven for gosh, almost 10 years, and it was still very functional but didn't look the nicest. I needed a new bag to bring to work (I bring a laptop etc to and from the office b/c I'm basically always on call). It looks great, love the color. It's a very rich green, with a hint of blue.

    The pockets make it very versatile, and the main pocket is pretty generous. I can definitely fit more than in my Fjallraven, but it doesn't feel like a huge backpack which is also really nice. One mild annoyance is that filling certain pocket takes away space from the main pocket, but honestly that just means I need to plan better. Took it on a two week trip as my personal item and it was fantastic. I rockhound and loaded it up with rocks (not in the field, it's too nice for that, only when they were cleaned lol) and it was a dream to wear even with the added weight.

    Overall it's basically perfect, with a couple nitpicky things are are more an issue with me than the bag.

  • Frances Y.
    Verified Buyer
    Bought For Myself
    Product Standouts Thoughtful Design, Comfortable, High Quality Craftsmanship, High Quality Finishings, Durable
    4 months ago
    Bought For Myself
    Product Standouts Thoughtful Design, Comfortable, High Quality Craftsmanship, High Quality Finishings, Durable
    Rated 4 stars
    Not exactly as I wished

    I was looking for a smallish knapsack for travel. Enough pockets to keep things readily available, organized, and well made. I thought that the Synapse would be the one. It came to be "ok" to "so-so". First the main compartment was great. It could take a tablet on the side pocket while leaving room for a sweater and a folding umbrella along with my carry pack of medicines, toiletries and misc stuff and my Kindle. Outside pockets seemed to fail me. Topmost zipper was long and deep. Yes a water bottle would work. The pouch in the front was too shallow to be practical. It would have been wonderful to put a wallet in there but a small woman's wallet was not possible definitely not for a cell phone. It meant I used the top zipper pouch which meant it would fall to the bottom and I had to fish it out. Side compartments were too shallow. I could put in my cell phone in one of them provided nothing else ..I have an android phone and it is a bit larger. I did like the pen holders in one of the side compartments, but the inside would only fit a small jotlet pad. I usually carry a journel with me so that didnt work. The zip pouch on the bottom was fine for pens, and anything that would not crush NOT a place for a cell phone. I loved the ring clips, the key fob and I did get some small containers to store small items in one spot. The colors and clear plastic made them easy to ID when I was fishing for them. Still I am disappointed. It's not perfect. I had…

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