The Brown Buffalo Conceal Pack 21L vs. Tom Bihn Synik 26

Two carry-on travel backpacks, compared spec for spec.

The Brown Buffalo Conceal Pack 21L

Front facing view of the The Brown Buffalo Conceal Pack 21L
Capacity21 L
Weight1.3 kg
Dimensions50×30×15 cm
Airline fit92%
Price$325

Feature by feature

The Brown Buffalo Conceal Pack 21LFeatureTom Bihn Synik 26
Storage
N Compression N
None Expanded Capacity None
1 Opening 1
front Passport front
Y Passthrough Y
Carry
Y Backpack Y
N Hip Belt removable
removable Sternum Strap removable
Inside
15in Laptop 15in
2 Main Compartments 6
N Organizer Y
Outside
× Hard Shell ×
N Rain-fly N
N Water Bottle Holder 1, front
Y Water Resistant Y
Material
Challenge® Sailcloth EPX400X-Pac®: 2 lb 9 oz / 1185 grams 630d Ballistic/200d Halcyon Lining: 2 lb 11 oz / 1240 grams

Tom Bihn Synik 26

Front facing view of the Tom Bihn Synik 26
Capacity26 L
Weight1.2 kg
Dimensions46×34×28 cm
Airline fit14%
Price$340

Key differences between the The Brown Buffalo Conceal Pack 21L and Tom Bihn Synik 26

Both have: passport pocket, luggage passthrough, backpack straps, sternum strap, laptop sleeve, water resistant.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 27 accept both. 146 accept only the The Brown Buffalo Conceal Pack 21L, and 0 accept only the Tom Bihn Synik 26.

Only the The Brown Buffalo Conceal Pack 21L fits

Aegean Airlines, Aer Lingus, Aeroflot, Aerolineas Argentinas, Aeromexico, Air Asia, Air Astana, Air Baltic, Air Canada, Air Caraibes, Air China, Air France, Air India, Air Macau, Air Malta, Air Mauritius, Air Niugini, Air Nostrum, Air Serbia, Air Seychelles, Air Wisconsin, AirAsiaX, Alaska Airlines, All Nipon Airways, Allegiant Air, American Airlines, ANA, Asiana Airlines, ATA Airlines, Atlas Global, Austrian, Avianca , Azerbaijan Airlines, Bahamasair, Bangkok Airways, Belavia, Biman Bangladesh, Blue Air, Boliviana de Aviacion, British Airways, Brussels Airlines, Bulgaria Air, Cambodia Angkor Air, Cathay Pacific, Cayman Airways, Cebu Pacific, China Airlines, China Eastern, CommutAir, Conviasa, Copa Airlines, Czech Airlines, Delta Airlines, Dragonair, EL AL, Emirates Airlines, Enter Air, Ethiopian Airlines, Etihad Airways, Eurowings, EVA Air, Fiji Airways, Finnair, Flair Air, flybe, Frontier Airlines, Garuda Indonesia, Gol Linhas Aereas, Hawaiian Airlines, Hong Kong Airlines, Iberia, Icelandair, Indigo, InselAir, Interjet, Iran Air, Iran Aseman Air, Japan Airlines, Jet Airways, Jet2, jetBlue Airways, Jetstar Airways, Jetstar Asia, Juneyao Airlines, Kenya Airways, KLM, Kulula, Kuwait Air, LATAM , Liat Airlines, LOT Polish, Lufthansa, Luxair, Mahan Air, Malaysia Airlines, Mango, Meridiana Fly, Mesa Airlines, Middle East Airlines, Monarch Airlines, Nordwind Airlines, Norwegian, Oman Air, Onur Air, Pakistan International, Peach, PenAir, Porter Airlines, Qantas Airways, Qatar Airways, Republic Airways, Royal Brunei Airlines, Royal Jordanian, Ryanair, S7, SAS Scandinavian, Scoot, Shandong Airlines, Shenzhen Airlines, Sky Airlines, Skywest, Inc., South African Airways, Southwest Airlines, Spirit Airlines, SriLankan Airlines, Sun Express, Swiss Int'l Air Lines, TAP Air Portugal, TAROM, Thai Airways, Tianjin Airlines (A320 & E190), Tiger Airways, Trans States, Travel Service Airlines, TUI, Turkish Airlines, Ukraine International, United Airlines, Uzbekistan Air, Vietnam Airlines, VIM Airlines (Closed), Virgin Atlantic, Volotea, WestJet, WOW Airlines, Xiamen.

The Brown Buffalo Conceal Pack 21L vs. Tom Bihn Synik 26: which should you pack?

The Tom Bihn Synik 26 carries 5L more than the The Brown Buffalo Conceal Pack 21L (21L vs. 26L), while the Tom Bihn Synik 26 is the lighter pack at 1.2kg (vs. 1.3kg). For carry-on flexibility, the The Brown Buffalo Conceal Pack 21L fits 92% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Tom Bihn Synik 26; if you want to travel lighter, the Tom Bihn Synik 26 is the better call.