Tom Bihn Synapse 25

By: Tom Bihn

Front facing view of the Tom Bihn Synapse 25

Size Details Use Metric
Capacity	25L
Capacity per Weight	31.3L
Weight	0.8kg 1.8lbs	Low
Capacity per KgLbs	31.3 13.9	Low
Dimensions	51x35x24cm 20x13.4x9.1in
Cubic Space	42840cm³ 2438.8in³
Capacity Diff	17L	High

Airline Compatibility

✈️ 92% (182/199)

This bag can be used as a carry on in 92% of airlines.

Our Thoughts

The Synapse is on the small side with only a 25L capacity but should do well on shorter and warmer trips. The warmer the weather, the smaller the clothes can be. People generally don't pack big clothes during the summer months.

One feature that some people overlook is that the Synapse 25 has a lot of O-rings all over the place which makes customizing for more adventurous travel easy. With extra O-rings, you can easily clip on water bottles or other things you want to keep handy but don't want to be loose inside your pockets. I always throw copies of travel documents inside a plastic bag and attach that to an O-ring.

Internal Frame

The Tom Bihn Synapse 25 has a removable internal frame which will keep the bag much more sturdy. I like the inner frame because it gives you the option of a nice and soft quicky bag for quick trips or a rigid frame for when you need to maximize space.

My biggest question about the internal frame is if it feels comfortable on your back. Remember when you were a kid with heavy backpacks with a billion books? I remember the backpack I had was always loose and floppy, but it was always comfortable. Some of the more rigid packs are uncomfortable.

I've only worn the Tom Bihn for short periods of time, so I'm not quite sure what the verdict is.

👍 Reasons to Buy

The overall organization is top notch and truly functional.
The interior fabric is of great quality.
Highly durable materials are used in creating this bag plus it comes with a great warranty.

🤔 Things to Consider

The divider pocket can get in the way considering the main compartment is already small.
Can be quite hard to slide things out when the bag is fully packed.
Quite expensive but it's an excellent backpack.

🔎 Reviews

Tom Bihn Synapse 25 Review
packhacker.com

"For a bag with a bunch of internal organization, it’s hard to beat. "

Tom Bihn Synapse Review
www.gearhacker.com

"There is no doubt that the build, material, and organization quality is world class. The exterior organization is great, and with some added Tom Bihn accessories, this pack can really be used for any activity—indoor or outdoor."

Features

Storage
Compression	N
Expanded Capacity	None
Opening	Other
Passport	front
Passthrough	N
Carry
Backpack	S
Hip Belt	R
Sternum Strap	R
Inside
Laptop	15
Main Compartments	6
Organizer	Y
Outside
Hard Shell	False
Rain-fly	N
Water Bottle Holder
Water Resistant	Y
Material: 200 denier Halcyon/nylon ripstop fabric lining 400 denier nylon lower back

Compatible Airlines

Adria Airways, Aegean Airlines, Aer Lingus, Aeroflot, Aerolineas Argentinas, Aeromexico, Aeropostal Alas de Venezuela, Air Asia, Air Astana, Air Baltic, Air Berlin (Closed), Air Canada, Air Caraibes, Air China, Air Europa, Air France, Air India, Air Koryo, Air Macau, Air Malta, Air Mauritius, Air New Zealand, Air Niugini, Air Nostrum, Air Serbia, Air Seychelles, Air Tahiti, Air Tahiti Nui, Air Transat, AirAsiaX, Aircalin, Alitalia, All Nipon Airways, ANA, Asiana Airlines, ATA Airlines, Atlas Global, Austrian, Avianca , Azerbaijan Airlines, Azul Airlines, Azul Linhas, Bahamasair, Bangkok Airways, Belavia, Biman Bangladesh, Blue Air, Boliviana de Aviacion, British Airways, Brussels Airlines, Bulgaria Air, Cambodia Angkor Air, Cape Air, Caribbean Airlines, Cathay Pacific, Cayman Airways, Cebu Pacific, China Airlines, China Eastern, China Southern, Conviasa, Copa Airlines, Croatia Air, Cubana de Aviacion, Czech Airlines, Dragonair, easyJet, EL AL, Emirates Airlines, Enter Air, Ethiopian Airlines, Etihad Airways, Eurowings, EVA Air, Fiji Airways, Finnair, Flair Air, flybe, Frontier Airlines, Gol Linhas Aereas, Gulf Air, Hainan Airlines, Hong Kong Airlines, Iberia, Icelandair, Indigo, InselAir, Interjet, Iran Air, Iran Aseman Air, Island Air, Japan Airlines, Jet Airways, Jet2, Jetstar Airways, Jetstar Asia, Juneyao Airlines, Kenya Airways, KLM, Korean Air, Kulula, Kuwait Air, LATAM , LC Perú, Linea Aerea Amaszonas, Lion Air Group, LOT Polish, Lufthansa, Luxair, Mahan Air, Malaysia Airlines, Mango, Meridiana Fly, Middle East Airlines, Monarch Airlines, Nordwind Airlines, Norwegian, Oman Air, Onur Air, Pakistan International, Peach, Pegasus Airlines, PenAir, Philippine Airlines, Porter Airlines, Qantas Airways, Qatar Airways, Regional Express, Royal Air Morocco, Royal Brunei Airlines, Royal Jordanian, Ryanair, S7, SAS Scandinavian, Saudi Arabian Airlines, Scoot, Shandong Airlines, Shenzhen Airlines, Sichuan Airlines, SilkAir, Silver Airways, Singapore Airlines, Sky Airlines, Skywest, Inc., South African Airways, Southwest Airlines, SpiceJet, Spirit Airlines, Spring Airlines, SriLankan Airlines, Sun Country, Sun Express, Swiss Int'l Air Lines, TAAG Angola, TAM Airlines, TAP Air Portugal, TAROM, Thai Airways, Thomson Airways, Tianjin Airlines (A320 & E190), Tianjin Airlines (E145), Tiger Airways, Travel Service Airlines, Turkish Airlines, Turkmenistan Airlines, Ukraine International, Ural Airlines, uTair Airlines, Uzbekistan Air, Vietnam Airlines, VIM Airlines (Closed), Virgin America, Virgin Atlantic, Virgin Australia, Vivaaerobus, VivaColombia, Volaris, Volotea, WestJet, Wizz Air, WOW Airlines, Xiamen