Tri-Star

Tom Bihn Tri-Star is a 33L, 1.53kg3.4lb travel backpack measuring 33×48×20.5cm13×19×8in. It fits the carry-on size limit of 32 of 36 major airlines and the personal-item limit of 0 of 26. Under the seat, its 20.5cm8.1in side is over the 20cm7.9in limit at 15 of the 26 airlines it misses. Specs from tombihn.com, checked September 2026.

Volume: 33Lfixed size
Weight: 1.53kg3.4lb3.4lb1.53kg
Carry-on: 32/36airlines fit it
Personal item: 0/26under-seat limits

Dimensions: 33×48×20.5cm13×19×8in 13×19×8in33×48×20.5cm
Price: $395 as of September 2026
Laptop: no laptop sleeve
Opening: n/a
Warranty: Lifetime Fixes faults free of charge, wear and tear repairs are done at a reasonable charge.
Compartments: n/a
Bottle pockets: 1

Price history

$395 at every weekly check since Oct 5, 2026 (3 checks).

Checked weekly on the brand's US store.

Material: bluesign certified 630d High-Tenacity 2x2 ballistic nylon exterior (1050d option), 200d Halcyon nylon ripstop interior, YKK water-repellent zippers

Three-way carry: briefcase, backpack (stowable straps) or shoulder bag
Three equal main compartments
Weight is the 1050d ballistic version (other ballistic 1.43 kg)
Cache loops for a laptop sleeve sold separately; no built-in laptop sleeve

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Last checked: 2026-09. Prices and specs may have changed.

Does the Tom Bihn Tri-Star fit airline carry-on limits?

Draw against

Too bigToo big on Ryanair. cabin bag 55×40×20cm21.5×15.5×8in · under the seat 40×30×20cm15.5×12×8in. Bag in cminches, turned to fit.

Flag as a tight fit undercm spare

Airline	Carry-on	Personal item	Cabin-bag weight
Air Arabia	Too bigToo big	Too bigToo big	5.5kg to pack (of 7kg)12.1lb to pack (of 15.4lb)
Air CanadaCabin bag not on every fare	FitsFits	Too bigToo big	No published limitNo published limit
Air FranceCabin bag not on every fare	FitsFits	Too bigToo big	10.5kg to pack (of 12kg shared with personal item)23.1lb to pack (of 26.5lb shared with personal item)
Air India	Too bigToo big	No published limit	5.5kg to pack (of 7kg)12.1lb to pack (of 15.4lb)
AirAsia	FitsFits	Too bigToo big	5.5kg to pack (of 7kg shared with personal item)12.1lb to pack (of 15.4lb shared with personal item)
Alaska Airlines	FitsFits	No published limit	No published limitNo published limit
Allegiant AirCabin bag not on every fare	FitsFits	Too bigToo big	No published limitNo published limit
American Airlines	FitsFits	Too bigToo big	No published limitNo published limit
ANA (All Nippon Airways)	FitsFits	Too bigToo big	8.5kg to pack (of 10kg shared with personal item)18.7lb to pack (of 22lb shared with personal item)
AviancaCabin bag not on every fare	FitsFits	No published limit	8.5kg to pack (of 10kg)18.7lb to pack (of 22lb)
British Airways	FitsFits	Too bigToo big	No published limitNo published limit
Cebu Pacific	FitsFits	Too bigToo big	8.5kg to pack (of 10kg shared with personal item)18.7lb to pack (of 22lb shared with personal item)
Delta Air Lines	FitsFits	No published limit	No published limitNo published limit
easyJetCabin bag not on every fare	FitsFits	Too bigToo big	13.5kg to pack (of 15kg)29.8lb to pack (of 33.1lb)
Emirates	Tight fit (1.5cm spare)Tight fit (0.6in spare)	No published limit	5.5kg to pack (of 7kg)12.1lb to pack (of 15.4lb)
Frontier AirlinesCabin bag not on every fare	FitsFits	Too bigToo big	14.4kg to pack (of 15.9kg)31.7lb to pack (of 35.1lb)
Gol Linhas Aereas	FitsFits	No published limit	8.5kg to pack (of 10kg)18.7lb to pack (of 22lb)
IndiGo	FitsFits	No published limit	5.5kg to pack (of 7kg)12.1lb to pack (of 15.4lb)
JetBlue Airways	FitsFits	Too bigToo big	No published limitNo published limit
KLMCabin bag not on every fare	FitsFits	Too bigToo big	10.5kg to pack (of 12kg shared with personal item)23.1lb to pack (of 26.5lb shared with personal item)
LATAM Airlines	FitsFits	Too bigToo big	10.5kg to pack (of 12kg)23.1lb to pack (of 26.5lb)
LufthansaCabin bag not on every fare	FitsFits	Too bigToo big	6.5kg to pack (of 8kg)14.3lb to pack (of 17.6lb)
Norwegian Air ShuttleCabin bag not on every fare	FitsFits	Too bigToo big	8.5kg to pack (of 10kg shared with personal item)18.7lb to pack (of 22lb shared with personal item)
Qantas	FitsFits	No published limit	5.5kg to pack (of 7kg shared with personal item)12.1lb to pack (of 15.4lb shared with personal item)
Qatar Airways	FitsFits	No published limit	5.5kg to pack (of 7kg)12.1lb to pack (of 15.4lb)
RyanairCabin bag not on every fare	Too bigToo big	Too bigToo big	8.5kg to pack (of 10kg)18.7lb to pack (of 22lb)
SAS	FitsFits	Too bigToo big	6.5kg to pack (of 8kg)14.3lb to pack (of 17.6lb)
Singapore Airlines	FitsFits	Too bigToo big	5.5kg to pack (of 7kg)12.1lb to pack (of 15.4lb)
Southwest Airlines	FitsFits	No published limit	No published limitNo published limit
Turkish Airlines	FitsFits	Too bigToo big	6.5kg to pack (of 8kg)14.3lb to pack (of 17.6lb)
United AirlinesCabin bag not on every fare	FitsFits	Too bigToo big	No published limitNo published limit
Vietjet Air	FitsFits	Too bigToo big	5.5kg to pack (of 7kg shared with personal item)12.1lb to pack (of 15.4lb shared with personal item)
VolarisCabin bag not on every fare	FitsFits	Too bigToo big	8.5kg to pack (of 10kg)18.7lb to pack (of 22lb)
VuelingCabin bag not on every fare	Too bigToo big	Too bigToo big	8.5kg to pack (of 10kg)18.7lb to pack (of 22lb)
WestJetCabin bag not on every fare	FitsFits	Too bigToo big	No published limitNo published limit
Wizz AirCabin bag not on every fare	FitsFits	Too bigToo big	8.5kg to pack (of 10kg)18.7lb to pack (of 22lb)

Compared in any orientation against each airline's published size limit. A tight fit has under 2cm to spare, so a packed soft bag may not pass a sizer. Set it to 0 to turn the warning off. Weight is what the airline allows in the cabin minus this bag's empty 1.53kg3.4lb. Limits and sources. Own a different bag? Check it against every airline.