Trailblazer 25L

Montane Trailblazer 25L is a 25L, 0.85kg1.9lb travel backpack measuring 54×25.5×18.5cm21.5×10×7.5in. It fits the carry-on size limit of 35 of 36 major airlines and the personal-item limit of 0 of 26. Under the seat, its 54cm21.3in side is over the 40cm15.7in limit at 12 of the 26 airlines it misses. Specs from montane.com, checked October 2026.

Volume: 25Lfixed size
Weight: 0.85kg1.9lb1.9lb0.85kg
Carry-on: 35/36airlines fit it
Personal item: 0/26under-seat limits

Dimensions: 54×25.5×18.5cm21.5×10×7.5in 21.5×10×7.5in54×25.5×18.5cm
Price: $150 as of October 2026
Laptop: n/a
Opening: Top-loading, Bivi opening with quick release cord lock
Warranty: Lifetime Guaranteed for life against faults in workmanship and materials.
Compartments: n/a
Bottle pockets: 2

Hydration sleeve
Water-resistant
Hip belt
Sternum strap

Material: RAPTOR CROSS LITE 70D 100% recycled nylon with PFC-free DWR, reinforced recycled nylon base

ZephyrAD adjustable back length and 3D moulded foam back panel
Cord compression system and modular T-Hook front panel
Shoulder strap pockets fit soft flasks or hard bottles

Last checked: 2026-10. Prices and specs may have changed.

Does the Montane Trailblazer 25L fit airline carry-on limits?

Draw against

Cabin bag, tight (1cm spare)Cabin bag, tight (0.4in spare) 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	Tight fit (1cm spare)Tight fit (0.4in spare)	Too bigToo big	6.2kg to pack (of 7kg)13.7lb to pack (of 15.4lb)
Air CanadaCabin bag not on every fare	Tight fit (1cm spare)Tight fit (0.4in spare)	Too bigToo big	No published limitNo published limit
Air FranceCabin bag not on every fare	Tight fit (1cm spare)Tight fit (0.4in spare)	Too bigToo big	11.2kg to pack (of 12kg shared with personal item)24.7lb to pack (of 26.5lb shared with personal item)
Air India	Tight fit (1cm spare)Tight fit (0.4in spare)	No published limit	6.2kg to pack (of 7kg)13.7lb to pack (of 15.4lb)
AirAsia	FitsFits	Too bigToo big	6.2kg to pack (of 7kg shared with personal item)13.7lb 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	Tight fit (1cm spare)Tight fit (0.4in spare)	Too bigToo big	No published limitNo published limit
American Airlines	FitsFits	Too bigToo big	No published limitNo published limit
ANA (All Nippon Airways)	Tight fit (1cm spare)Tight fit (0.4in spare)	Too bigToo big	9.2kg to pack (of 10kg shared with personal item)20.3lb to pack (of 22lb shared with personal item)
AviancaCabin bag not on every fare	Tight fit (1cm spare)Tight fit (0.4in spare)	No published limit	9.2kg to pack (of 10kg)20.3lb to pack (of 22lb)
British Airways	FitsFits	Too bigToo big	No published limitNo published limit
Cebu Pacific	FitsFits	Too bigToo big	9.2kg to pack (of 10kg shared with personal item)20.3lb 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	14.2kg to pack (of 15kg)31.3lb to pack (of 33.1lb)
Emirates	Tight fit (1cm spare)Tight fit (0.4in spare)	No published limit	6.2kg to pack (of 7kg)13.7lb to pack (of 15.4lb)
Frontier AirlinesCabin bag not on every fare	FitsFits	Too bigToo big	15.1kg to pack (of 15.9kg)33.3lb to pack (of 35.1lb)
Gol Linhas Aereas	Tight fit (1cm spare)Tight fit (0.4in spare)	No published limit	9.2kg to pack (of 10kg)20.3lb to pack (of 22lb)
IndiGo	Tight fit (1cm spare)Tight fit (0.4in spare)	No published limit	6.2kg to pack (of 7kg)13.7lb to pack (of 15.4lb)
JetBlue Airways	FitsFits	Too bigToo big	No published limitNo published limit
KLMCabin bag not on every fare	Tight fit (1cm spare)Tight fit (0.4in spare)	Too bigToo big	11.2kg to pack (of 12kg shared with personal item)24.7lb to pack (of 26.5lb shared with personal item)
LATAM Airlines	Tight fit (1cm spare)Tight fit (0.4in spare)	Too bigToo big	11.2kg to pack (of 12kg)24.7lb to pack (of 26.5lb)
LufthansaCabin bag not on every fare	Tight fit (1cm spare)Tight fit (0.4in spare)	Too bigToo big	7.2kg to pack (of 8kg)15.9lb to pack (of 17.6lb)
Norwegian Air ShuttleCabin bag not on every fare	Tight fit (1cm spare)Tight fit (0.4in spare)	Too bigToo big	9.2kg to pack (of 10kg shared with personal item)20.3lb to pack (of 22lb shared with personal item)
Qantas	FitsFits	No published limit	6.2kg to pack (of 7kg shared with personal item)13.7lb to pack (of 15.4lb shared with personal item)
Qatar Airways	Too bigToo big	No published limit	6.2kg to pack (of 7kg)13.7lb to pack (of 15.4lb)
RyanairCabin bag not on every fare	Tight fit (1cm spare)Tight fit (0.4in spare)	Too bigToo big	9.2kg to pack (of 10kg)20.3lb to pack (of 22lb)
SAS	Tight fit (1cm spare)Tight fit (0.4in spare)	Too bigToo big	7.2kg to pack (of 8kg)15.9lb to pack (of 17.6lb)
Singapore Airlines	FitsFits	Too bigToo big	6.2kg to pack (of 7kg)13.7lb to pack (of 15.4lb)
Southwest Airlines	FitsFits	No published limit	No published limitNo published limit
Turkish Airlines	Tight fit (1cm spare)Tight fit (0.4in spare)	Too bigToo big	7.2kg to pack (of 8kg)15.9lb 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	6.2kg to pack (of 7kg shared with personal item)13.7lb to pack (of 15.4lb shared with personal item)
VolarisCabin bag not on every fare	Tight fit (1cm spare)Tight fit (0.4in spare)	Too bigToo big	9.2kg to pack (of 10kg)20.3lb to pack (of 22lb)
VuelingCabin bag not on every fare	Tight fit (1cm spare)Tight fit (0.4in spare)	Too bigToo big	9.2kg to pack (of 10kg)20.3lb 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	Tight fit (1cm spare)Tight fit (0.4in spare)	Too bigToo big	9.2kg to pack (of 10kg)20.3lb 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 0.85kg1.9lb. Limits and sources. Own a different bag? Check it against every airline.