Tom Bihn Synapse 25

Tom Bihn Synapse 25
Spatial Stats

25L - 0.8kg - 23 x 34 x 51

Airline Compatibility

✈️ 92% (182/199)

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

Tom Bihn Synapse 25 Review

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.


Laptop Sleeve No
Compartments 6
Passport front
Waterbottle 2 center
Organizer Y
Organizer Y
Sternum Strap R
Water Resistance Y
Rainfly N
Compression 0
Molle N
Lash Points 0
Backpack Y
Shoulder Strap N
Hydration N
Passthrough N

Link to Manufacturer

Tom Bihn Synapse 25 Packing Lists

Packing List for 4 Months through Mexico and Central America
πŸ“† 120 days
🌎 Mexico, Central America
🌑️ 14 to 28 °C (57.2 to 82.4 °F)
πŸ“œ 35 items
Packing List for a 5 Day Trade Show
πŸ“† 5 days
🌑️ 0 to 0 °C (32 to 32 °F)
πŸ“œ 40 items

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 PerΓΊ, 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