APEX Backpack Large

KNKG APEX Backpack Large is a 40L, 1.9kg4.2lb travel backpack measuring 45×32×28cm17.5×12.5×11in.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 28cm11in side is over the 20cm7.9in limit at 15 of the 26 airlines it misses. Specs from knkg.com, checked October 2026.

Volume: 40Lexpands to 45L
Weight: 1.9kg4.2lb4.2lb1.9kg
Carry-on: 1/36airlines fit it
Personal item: 0/26under-seat limits

Dimensions: 45×32×28cm17.5×12.5×11in 17.5×12.5×11in45×32×28cm
Price: $240 as of October 2026
Laptop: up to 16"
Opening: Top-loading, Top opening plus an extra flat-lay opening compartment
Warranty: 25 years Defects in material or workmanship for 25 years, repaired or replaced.
Compartments: n/a
Bottle pockets: 2

Shoe compartment
Hip belt (removable)
Sternum strap (removable)
Luggage pass-through

Material: 1680D ballistic nylon body, ripstop nylon lining, YKK Vislon zippers, powder-coated steel hardware

Expands from 40 L to 45 L by increasing depth from 28 cm to 32 cm
Internal shoe compartment fits up to size 15
Removable chest and belt strap attachment
Four hook-and-loop patch panels

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

Does the KNKG APEX Backpack Large 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	5.1kg to pack (of 7kg)11.2lb 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	10.1kg to pack (of 12kg shared with personal item)22.3lb to pack (of 26.5lb shared with personal item)
Air India	Too bigToo big	No published limit	5.1kg to pack (of 7kg)11.2lb to pack (of 15.4lb)
AirAsia	Too bigToo big	Too bigToo big	5.1kg to pack (of 7kg shared with personal item)11.2lb 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	8.1kg to pack (of 10kg shared with personal item)17.9lb to pack (of 22lb shared with personal item)
AviancaCabin bag not on every fare	Too bigToo big	No published limit	8.1kg to pack (of 10kg)17.9lb 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	8.1kg to pack (of 10kg shared with personal item)17.9lb 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	13.1kg to pack (of 15kg)28.9lb to pack (of 33.1lb)
Emirates	Too bigToo big	No published limit	5.1kg to pack (of 7kg)11.2lb to pack (of 15.4lb)
Frontier AirlinesCabin bag not on every fare	Too bigToo big	Too bigToo big	14kg to pack (of 15.9kg)30.9lb to pack (of 35.1lb)
Gol Linhas Aereas	Too bigToo big	No published limit	8.1kg to pack (of 10kg)17.9lb to pack (of 22lb)
IndiGo	Too bigToo big	No published limit	5.1kg to pack (of 7kg)11.2lb 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	10.1kg to pack (of 12kg shared with personal item)22.3lb to pack (of 26.5lb shared with personal item)
LATAM Airlines	Too bigToo big	Too bigToo big	10.1kg to pack (of 12kg)22.3lb to pack (of 26.5lb)
LufthansaCabin bag not on every fare	Too bigToo big	Too bigToo big	6.1kg to pack (of 8kg)13.4lb to pack (of 17.6lb)
Norwegian Air ShuttleCabin bag not on every fare	Too bigToo big	Too bigToo big	8.1kg to pack (of 10kg shared with personal item)17.9lb to pack (of 22lb shared with personal item)
Qantas	Too bigToo big	No published limit	5.1kg to pack (of 7kg shared with personal item)11.2lb to pack (of 15.4lb shared with personal item)
Qatar Airways	Too bigToo big	No published limit	5.1kg to pack (of 7kg)11.2lb to pack (of 15.4lb)
RyanairCabin bag not on every fare	Too bigToo big	Too bigToo big	8.1kg to pack (of 10kg)17.9lb to pack (of 22lb)
SAS	Too bigToo big	Too bigToo big	6.1kg to pack (of 8kg)13.4lb to pack (of 17.6lb)
Singapore Airlines	FitsFits	Too bigToo big	5.1kg to pack (of 7kg)11.2lb 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	6.1kg to pack (of 8kg)13.4lb 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	5.1kg to pack (of 7kg shared with personal item)11.2lb to pack (of 15.4lb shared with personal item)
VolarisCabin bag not on every fare	Too bigToo big	Too bigToo big	8.1kg to pack (of 10kg)17.9lb to pack (of 22lb)
VuelingCabin bag not on every fare	Too bigToo big	Too bigToo big	8.1kg to pack (of 10kg)17.9lb 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	8.1kg to pack (of 10kg)17.9lb 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 1.9kg4.2lb. Limits and sources. Own a different bag? Check it against every airline.