Forge 40

Black Ember Forge 40 is a 30L, 2.25kg5lb travel backpack measuring 51×31×20cm20×12×8in. 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 51cm20.1in side is over the 40cm15.7in limit at 12 of the 26 airlines it misses. Specs from blackember.com, checked October 2026.

Volume: 30Lexpands to 40L
Weight: 2.25kg5lb5lb2.25kg
Carry-on: 35/36airlines fit it
Personal item: 0/26under-seat limits

Dimensions: 51×31×20cm20×12×8in 20×12×8in51×31×20cm
Price: $375 as of October 2026
Laptop: up to 16"
Opening: external fast access panel, top pocket, two exterior pockets that pass through to the interior, separate laptop and tablet compartment, expansion zip
Warranty: Lifetime Defects in materials and construction for the original owner; wallets 2 years; not normal wear.
Compartments: 3
Bottle pockets: n/a

Organizer
Water-resistant
Hip belt (insert sold separately)
Sternum strap (removable)
Load lifters
Shoulder strap (insert sold separately)
Luggage pass-through

Material: EmberTex PFAS-free 1220x600D nylon 6 with bonded laser-cut Hypalon panels, 210D ripstop nylon lining, YKK Aquaguard zippers, T6 anodized aluminum hardware

Carry as backpack, brief or shoulder bag; butterfly back panel hides the straps
Expands from 30 L to 40 L (51 x 31 x 25 cm expanded)
Hip belt, magnetic compression straps and shoulder strap sold separately
Also sold as a MAX bundle

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

Does the Black Ember Forge 40 fit airline carry-on limits?

Draw against

Cabin bag, tight (no spare)Cabin bag, tight (no 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 (no spare)Tight fit (no spare)	Too bigToo big	4.8kg to pack (of 7kg)10.6lb 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	9.8kg to pack (of 12kg shared with personal item)21.6lb to pack (of 26.5lb shared with personal item)
Air India	Tight fit (no spare)Tight fit (no spare)	No published limit	4.8kg to pack (of 7kg)10.6lb to pack (of 15.4lb)
AirAsia	FitsFits	Too bigToo big	4.8kg to pack (of 7kg shared with personal item)10.6lb 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	7.8kg to pack (of 10kg shared with personal item)17.2lb to pack (of 22lb shared with personal item)
AviancaCabin bag not on every fare	FitsFits	No published limit	7.8kg to pack (of 10kg)17.2lb to pack (of 22lb)
British Airways	FitsFits	Too bigToo big	No published limitNo published limit
Cebu Pacific	FitsFits	Too bigToo big	7.8kg to pack (of 10kg shared with personal item)17.2lb 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	12.8kg to pack (of 15kg)28.2lb to pack (of 33.1lb)
Emirates	FitsFits	No published limit	4.8kg to pack (of 7kg)10.6lb to pack (of 15.4lb)
Frontier AirlinesCabin bag not on every fare	FitsFits	Too bigToo big	13.7kg to pack (of 15.9kg)30.2lb to pack (of 35.1lb)
Gol Linhas Aereas	FitsFits	No published limit	7.8kg to pack (of 10kg)17.2lb to pack (of 22lb)
IndiGo	FitsFits	No published limit	4.8kg to pack (of 7kg)10.6lb 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	9.8kg to pack (of 12kg shared with personal item)21.6lb to pack (of 26.5lb shared with personal item)
LATAM Airlines	FitsFits	Too bigToo big	9.8kg to pack (of 12kg)21.6lb to pack (of 26.5lb)
LufthansaCabin bag not on every fare	FitsFits	Too bigToo big	5.8kg to pack (of 8kg)12.8lb to pack (of 17.6lb)
Norwegian Air ShuttleCabin bag not on every fare	FitsFits	Too bigToo big	7.8kg to pack (of 10kg shared with personal item)17.2lb to pack (of 22lb shared with personal item)
Qantas	FitsFits	No published limit	4.8kg to pack (of 7kg shared with personal item)10.6lb to pack (of 15.4lb shared with personal item)
Qatar Airways	Too bigToo big	No published limit	4.8kg to pack (of 7kg)10.6lb to pack (of 15.4lb)
RyanairCabin bag not on every fare	Tight fit (no spare)Tight fit (no spare)	Too bigToo big	7.8kg to pack (of 10kg)17.2lb to pack (of 22lb)
SAS	FitsFits	Too bigToo big	5.8kg to pack (of 8kg)12.8lb to pack (of 17.6lb)
Singapore Airlines	FitsFits	Too bigToo big	4.8kg to pack (of 7kg)10.6lb to pack (of 15.4lb)
Southwest Airlines	FitsFits	No published limit	No published limitNo published limit
Turkish Airlines	FitsFits	Too bigToo big	5.8kg to pack (of 8kg)12.8lb 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	4.8kg to pack (of 7kg shared with personal item)10.6lb to pack (of 15.4lb shared with personal item)
VolarisCabin bag not on every fare	FitsFits	Too bigToo big	7.8kg to pack (of 10kg)17.2lb to pack (of 22lb)
VuelingCabin bag not on every fare	Tight fit (no spare)Tight fit (no spare)	Too bigToo big	7.8kg to pack (of 10kg)17.2lb 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	7.8kg to pack (of 10kg)17.2lb 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 2.25kg5lb. Limits and sources. Own a different bag? Check it against every airline.