Mountain Duffel 40L

Topo Designs Mountain Duffel 40L is a 40L, 1.13kg2.5lb duffel measuring 26×50.8×30.5cm10×20×12in. It fits the carry-on size limit of 1 of 36 major airlines and the personal-item limit of 0 of 26. Under the seat, its 26cm10.2in side is over the 20cm7.9in limit at 15 of the 26 airlines it misses. Specs from topodesigns.com, checked September 2026.

Volume: 40Lfixed size
Weight: 1.13kg2.5lb2.5lb1.13kg
Carry-on: 1/36airlines fit it
Personal item: 0/26under-seat limits

Dimensions: 26×50.8×30.5cm10×20×12in 10×20×12in26×50.8×30.5cm
Price: $169 as of September 2026
Laptop: no laptop sleeve
Opening: n/a
Warranty: Lifetime Covers defects in materials and workmanship, not neglect, accidents or wear, paid repair program exists.
Compartments: n/a
Bottle pockets: n/a

Price history

$169 at every weekly check since Oct 5, 2026 (3 checks).

Checked weekly on the brand's US store.

Water-resistant
Shoulder strap (removable)

Material: 200D recycled nylon lightweight ripstop, 400D recycled nylon, 1680D recycled ballistic nylon, matte non-P PVC liner, PFC-free DWR

Removable backpack straps and shoulder strap
Water-resistant lining
Top valuables pocket with key clip

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

Does the Topo Designs Mountain Duffel 40L 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	5.9kg to pack (of 7kg)13lb to pack (of 15.4lb)
Air CanadaCabin bag not on every fare	Too bigToo big	Too bigToo big	No published limitNo published limit
Air FranceCabin bag not on every fare	Too bigToo big	Too bigToo big	10.9kg to pack (of 12kg shared with personal item)24lb to pack (of 26.5lb shared with personal item)
Air India	Too bigToo big	No published limit	5.9kg to pack (of 7kg)13lb to pack (of 15.4lb)
AirAsia	Too bigToo big	Too bigToo big	5.9kg to pack (of 7kg shared with personal item)13lb to pack (of 15.4lb shared with personal item)
Alaska Airlines	Too bigToo big	No published limit	No published limitNo published limit
Allegiant AirCabin bag not on every fare	Too bigToo big	Too bigToo big	No published limitNo published limit
American Airlines	Too bigToo big	Too bigToo big	No published limitNo published limit
ANA (All Nippon Airways)	Too bigToo big	Too bigToo big	8.9kg to pack (of 10kg shared with personal item)19.6lb to pack (of 22lb shared with personal item)
AviancaCabin bag not on every fare	Too bigToo big	No published limit	8.9kg to pack (of 10kg)19.6lb to pack (of 22lb)
British Airways	Too bigToo big	Too bigToo big	No published limitNo published limit
Cebu Pacific	Too bigToo big	Too bigToo big	8.9kg to pack (of 10kg shared with personal item)19.6lb to pack (of 22lb shared with personal item)
Delta Air Lines	Too bigToo big	No published limit	No published limitNo published limit
easyJetCabin bag not on every fare	Too bigToo big	Too bigToo big	13.9kg to pack (of 15kg)30.6lb to pack (of 33.1lb)
Emirates	Too bigToo big	No published limit	5.9kg to pack (of 7kg)13lb to pack (of 15.4lb)
Frontier AirlinesCabin bag not on every fare	Too bigToo big	Too bigToo big	14.8kg to pack (of 15.9kg)32.6lb to pack (of 35.1lb)
Gol Linhas Aereas	Too bigToo big	No published limit	8.9kg to pack (of 10kg)19.6lb to pack (of 22lb)
IndiGo	Too bigToo big	No published limit	5.9kg to pack (of 7kg)13lb to pack (of 15.4lb)
JetBlue Airways	Too bigToo big	Too bigToo big	No published limitNo published limit
KLMCabin bag not on every fare	Too bigToo big	Too bigToo big	10.9kg to pack (of 12kg shared with personal item)24lb to pack (of 26.5lb shared with personal item)
LATAM Airlines	Too bigToo big	Too bigToo big	10.9kg to pack (of 12kg)24lb to pack (of 26.5lb)
LufthansaCabin bag not on every fare	Too bigToo big	Too bigToo big	6.9kg to pack (of 8kg)15.2lb to pack (of 17.6lb)
Norwegian Air ShuttleCabin bag not on every fare	Too bigToo big	Too bigToo big	8.9kg to pack (of 10kg shared with personal item)19.6lb to pack (of 22lb shared with personal item)
Qantas	Too bigToo big	No published limit	5.9kg to pack (of 7kg shared with personal item)13lb to pack (of 15.4lb shared with personal item)
Qatar Airways	Too bigToo big	No published limit	5.9kg to pack (of 7kg)13lb to pack (of 15.4lb)
RyanairCabin bag not on every fare	Too bigToo big	Too bigToo big	8.9kg to pack (of 10kg)19.6lb to pack (of 22lb)
SAS	Too bigToo big	Too bigToo big	6.9kg to pack (of 8kg)15.2lb to pack (of 17.6lb)
Singapore Airlines	FitsFits	Too bigToo big	5.9kg to pack (of 7kg)13lb to pack (of 15.4lb)
Southwest Airlines	Too bigToo big	No published limit	No published limitNo published limit
Turkish Airlines	Too bigToo big	Too bigToo big	6.9kg to pack (of 8kg)15.2lb to pack (of 17.6lb)
United AirlinesCabin bag not on every fare	Too bigToo big	Too bigToo big	No published limitNo published limit
Vietjet Air	Too bigToo big	Too bigToo big	5.9kg to pack (of 7kg shared with personal item)13lb to pack (of 15.4lb shared with personal item)
VolarisCabin bag not on every fare	Too bigToo big	Too bigToo big	8.9kg to pack (of 10kg)19.6lb to pack (of 22lb)
VuelingCabin bag not on every fare	Too bigToo big	Too bigToo big	8.9kg to pack (of 10kg)19.6lb to pack (of 22lb)
WestJetCabin bag not on every fare	Too bigToo big	Too bigToo big	No published limitNo published limit
Wizz AirCabin bag not on every fare	Too bigToo big	Too bigToo big	8.9kg to pack (of 10kg)19.6lb 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 1.13kg2.5lb. Limits and sources. Own a different bag? Check it against every airline.