Contain 3.0 35L

Black Briar Contain 3.0 35L is a 35L, 1.8kg4lb travel backpack measuring 54.1×33×21.1cm21.5×13×8.5in.It fits the carry-on size limit of 31 of 36 major airlines and the personal-item limit of 0 of 26. Under the seat, its 21.1cm8.3in side is over the 20cm7.9in limit at 15 of the 26 airlines it misses. Specs from myblackbriar.com, checked October 2026.

Volume: 35Lfixed size
Weight: 1.8kg4lb4lb1.8kg
Carry-on: 31/36airlines fit it
Personal item: 0/26under-seat limits

Dimensions: 54.1×33×21.1cm21.5×13×8.5in 21.5×13×8.5in54.1×33×21.1cm
Price: $239.99 as of October 2026
Laptop: sleeve, size not published
Opening: Clamshell, opens 180 degrees
Warranty: 1 year One-year limited warranty against manufacturing defects.
Compartments: n/a
Bottle pockets: n/a

Organizer
Water-resistant
Rain cover

Material: Drycoatex Nylon 100% fabric

Sold as a snowboard backpack, with a detachable front hook strap for gear
TSA lock and built-in anti-theft wire
Backpack rain cover, small pouch and hook strap set included

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

Does the Black Briar Contain 3.0 35L 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	5.2kg to pack (of 7kg)11.5lb to pack (of 15.4lb)
Air CanadaCabin bag not on every fare	Tight fit (0.9cm spare)Tight fit (0.4in spare)	Too bigToo big	No published limitNo published limit
Air FranceCabin bag not on every fare	Tight fit (0.9cm spare)Tight fit (0.4in spare)	Too bigToo big	10.2kg to pack (of 12kg shared with personal item)22.5lb to pack (of 26.5lb shared with personal item)
Air India	Too bigToo big	No published limit	5.2kg to pack (of 7kg)11.5lb to pack (of 15.4lb)
AirAsia	Tight fit (1.9cm spare)Tight fit (0.7in spare)	Too bigToo big	5.2kg to pack (of 7kg shared with personal item)11.5lb to pack (of 15.4lb shared with personal item)
Alaska Airlines	Tight fit (1.9cm spare)Tight fit (0.7in spare)	No published limit	No published limitNo published limit
Allegiant AirCabin bag not on every fare	Tight fit (0.9cm spare)Tight fit (0.4in spare)	Too bigToo big	No published limitNo published limit
American Airlines	Tight fit (1.9cm spare)Tight fit (0.7in spare)	Too bigToo big	No published limitNo published limit
ANA (All Nippon Airways)	Tight fit (0.9cm spare)Tight fit (0.4in spare)	Too bigToo big	8.2kg to pack (of 10kg shared with personal item)18.1lb to pack (of 22lb shared with personal item)
AviancaCabin bag not on every fare	Tight fit (0.9cm spare)Tight fit (0.4in spare)	No published limit	8.2kg to pack (of 10kg)18.1lb to pack (of 22lb)
British Airways	Tight fit (1.9cm spare)Tight fit (0.7in spare)	Too bigToo big	No published limitNo published limit
Cebu Pacific	Tight fit (1.9cm spare)Tight fit (0.7in spare)	Too bigToo big	8.2kg to pack (of 10kg shared with personal item)18.1lb to pack (of 22lb shared with personal item)
Delta Air Lines	Tight fit (1.9cm spare)Tight fit (0.7in spare)	No published limit	No published limitNo published limit
easyJetCabin bag not on every fare	Tight fit (1.9cm spare)Tight fit (0.7in spare)	Too bigToo big	13.2kg to pack (of 15kg)29.1lb to pack (of 33.1lb)
Emirates	Tight fit (0.9cm spare)Tight fit (0.4in spare)	No published limit	5.2kg to pack (of 7kg)11.5lb to pack (of 15.4lb)
Frontier AirlinesCabin bag not on every fare	FitsFits	Too bigToo big	14.1kg to pack (of 15.9kg)31.1lb to pack (of 35.1lb)
Gol Linhas Aereas	Tight fit (0.9cm spare)Tight fit (0.4in spare)	No published limit	8.2kg to pack (of 10kg)18.1lb to pack (of 22lb)
IndiGo	Tight fit (0.9cm spare)Tight fit (0.4in spare)	No published limit	5.2kg to pack (of 7kg)11.5lb to pack (of 15.4lb)
JetBlue Airways	Tight fit (1.9cm spare)Tight fit (0.7in spare)	Too bigToo big	No published limitNo published limit
KLMCabin bag not on every fare	Tight fit (0.9cm spare)Tight fit (0.4in spare)	Too bigToo big	10.2kg to pack (of 12kg shared with personal item)22.5lb to pack (of 26.5lb shared with personal item)
LATAM Airlines	Tight fit (0.9cm spare)Tight fit (0.4in spare)	Too bigToo big	10.2kg to pack (of 12kg)22.5lb to pack (of 26.5lb)
LufthansaCabin bag not on every fare	Tight fit (0.9cm spare)Tight fit (0.4in spare)	Too bigToo big	6.2kg to pack (of 8kg)13.7lb to pack (of 17.6lb)
Norwegian Air ShuttleCabin bag not on every fare	Tight fit (0.9cm spare)Tight fit (0.4in spare)	Too bigToo big	8.2kg to pack (of 10kg shared with personal item)18.1lb to pack (of 22lb shared with personal item)
Qantas	Tight fit (1.9cm spare)Tight fit (0.7in spare)	No published limit	5.2kg to pack (of 7kg shared with personal item)11.5lb to pack (of 15.4lb shared with personal item)
Qatar Airways	Too bigToo big	No published limit	5.2kg to pack (of 7kg)11.5lb to pack (of 15.4lb)
RyanairCabin bag not on every fare	Too bigToo big	Too bigToo big	8.2kg to pack (of 10kg)18.1lb to pack (of 22lb)
SAS	Tight fit (0.9cm spare)Tight fit (0.4in spare)	Too bigToo big	6.2kg to pack (of 8kg)13.7lb to pack (of 17.6lb)
Singapore Airlines	FitsFits	Too bigToo big	5.2kg to pack (of 7kg)11.5lb to pack (of 15.4lb)
Southwest Airlines	FitsFits	No published limit	No published limitNo published limit
Turkish Airlines	Tight fit (0.9cm spare)Tight fit (0.4in spare)	Too bigToo big	6.2kg to pack (of 8kg)13.7lb to pack (of 17.6lb)
United AirlinesCabin bag not on every fare	Tight fit (1.9cm spare)Tight fit (0.7in spare)	Too bigToo big	No published limitNo published limit
Vietjet Air	Tight fit (1.9cm spare)Tight fit (0.7in spare)	Too bigToo big	5.2kg to pack (of 7kg shared with personal item)11.5lb to pack (of 15.4lb shared with personal item)
VolarisCabin bag not on every fare	Tight fit (0.9cm spare)Tight fit (0.4in spare)	Too bigToo big	8.2kg to pack (of 10kg)18.1lb to pack (of 22lb)
VuelingCabin bag not on every fare	Too bigToo big	Too bigToo big	8.2kg to pack (of 10kg)18.1lb to pack (of 22lb)
WestJetCabin bag not on every fare	Tight fit (1.9cm spare)Tight fit (0.7in spare)	Too bigToo big	No published limitNo published limit
Wizz AirCabin bag not on every fare	Tight fit (0.9cm spare)Tight fit (0.4in spare)	Too bigToo big	8.2kg to pack (of 10kg)18.1lb 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 1.8kg4lb. Limits and sources. Own a different bag? Check it against every airline.