Outdoor Backpack 25L

Peak Design Outdoor Backpack 25L is a 20L, 1.2kg2.6lb travel backpack measuring 49×28×15cm19.5×11×6in. It fits the carry-on size limit of 36 of 36 major airlines and the personal-item limit of 0 of 26. Under the seat, its 49cm19.3in side is over the 40cm15.7in limit at 12 of the 26 airlines it misses. Specs from peakdesign.com, checked September 2026.

Volume: 20Lexpands to 25L
Weight: 1.2kg2.6lb2.6lb1.2kg
Carry-on: 36/36airlines fit it
Personal item: 0/26under-seat limits

Dimensions: 49×28×15cm19.5×11×6in 19.5×11×6in49×28×15cm
Price: $249 as of September 2026
Laptop: up to 16"
Opening: Roll-top, roll top + rear panel
Warranty: Lifetime Covers manufacturing defects and functional failures, not cosmetic damage, wear or accidents.
Compartments: n/a
Bottle pockets: 2

Hydration sleeve
Water-resistant
Sternum strap
Camera compartment (insert sold separately)

Material: Recycled Terra Shell 210D ripstop, PU coated (1500mm), PFAS-free water repellent

Ultra Cinch roll-top adds up to 5L
Fits 1 Smedium Camera Cube
Three external stretch Flex Pockets
Optional padded hip belt sold separately

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

Does the Peak Design Outdoor Backpack 25L fit airline carry-on limits?

Draw against

Fits as a cabin bagFits as a cabin bag 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	FitsFits	Too bigToo big	5.8kg to pack (of 7kg)12.8lb 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	10.8kg to pack (of 12kg shared with personal item)23.8lb to pack (of 26.5lb shared with personal item)
Air India	FitsFits	No published limit	5.8kg to pack (of 7kg)12.8lb to pack (of 15.4lb)
AirAsia	FitsFits	Too bigToo big	5.8kg to pack (of 7kg shared with personal item)12.8lb 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	8.8kg to pack (of 10kg shared with personal item)19.4lb to pack (of 22lb shared with personal item)
AviancaCabin bag not on every fare	FitsFits	No published limit	8.8kg to pack (of 10kg)19.4lb to pack (of 22lb)
British Airways	FitsFits	Too bigToo big	No published limitNo published limit
Cebu Pacific	FitsFits	Too bigToo big	8.8kg to pack (of 10kg shared with personal item)19.4lb 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	13.8kg to pack (of 15kg)30.4lb to pack (of 33.1lb)
Emirates	FitsFits	No published limit	5.8kg to pack (of 7kg)12.8lb to pack (of 15.4lb)
Frontier AirlinesCabin bag not on every fare	FitsFits	Too bigToo big	14.7kg to pack (of 15.9kg)32.4lb to pack (of 35.1lb)
Gol Linhas Aereas	FitsFits	No published limit	8.8kg to pack (of 10kg)19.4lb to pack (of 22lb)
IndiGo	FitsFits	No published limit	5.8kg to pack (of 7kg)12.8lb 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	10.8kg to pack (of 12kg shared with personal item)23.8lb to pack (of 26.5lb shared with personal item)
LATAM Airlines	FitsFits	Too bigToo big	10.8kg to pack (of 12kg)23.8lb to pack (of 26.5lb)
LufthansaCabin bag not on every fare	FitsFits	Too bigToo big	6.8kg to pack (of 8kg)15lb to pack (of 17.6lb)
Norwegian Air ShuttleCabin bag not on every fare	FitsFits	Too bigToo big	8.8kg to pack (of 10kg shared with personal item)19.4lb to pack (of 22lb shared with personal item)
Qantas	FitsFits	No published limit	5.8kg to pack (of 7kg shared with personal item)12.8lb to pack (of 15.4lb shared with personal item)
Qatar Airways	Tight fit (1cm spare)Tight fit (0.4in spare)	No published limit	5.8kg to pack (of 7kg)12.8lb to pack (of 15.4lb)
RyanairCabin bag not on every fare	FitsFits	Too bigToo big	8.8kg to pack (of 10kg)19.4lb to pack (of 22lb)
SAS	FitsFits	Too bigToo big	6.8kg to pack (of 8kg)15lb to pack (of 17.6lb)
Singapore Airlines	FitsFits	Too bigToo big	5.8kg to pack (of 7kg)12.8lb to pack (of 15.4lb)
Southwest Airlines	FitsFits	No published limit	No published limitNo published limit
Turkish Airlines	FitsFits	Too bigToo big	6.8kg to pack (of 8kg)15lb 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	5.8kg to pack (of 7kg shared with personal item)12.8lb to pack (of 15.4lb shared with personal item)
VolarisCabin bag not on every fare	FitsFits	Too bigToo big	8.8kg to pack (of 10kg)19.4lb to pack (of 22lb)
VuelingCabin bag not on every fare	FitsFits	Too bigToo big	8.8kg to pack (of 10kg)19.4lb 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	8.8kg to pack (of 10kg)19.4lb 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 1.2kg2.6lb. Limits and sources. Own a different bag? Check it against every airline.