CORE PRO Backpack Large 33L

KNKG CORE PRO Backpack Large 33L is a 33L, 1.1kg2.4lb travel backpack measuring 53.3×31×20.1cm21×12×8in. 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 20.1cm7.9in side is over the 20cm7.9in limit at 15 of the 26 airlines it misses. Specs from knkg.com, checked October 2026.

Volume: 33Lfixed size
Weight: 1.1kg2.4lb2.4lb1.1kg
Carry-on: 31/36airlines fit it
Personal item: 0/26under-seat limits

Dimensions: 53.3×31×20.1cm21×12×8in 21×12×8in53.3×31×20.1cm
Price: $230 as of October 2026
Laptop: up to 16"
Opening: Zippered main compartment
Warranty: 25 years Defects in material or workmanship for 25 years, repaired or replaced.
Compartments: n/a
Bottle pockets: 2

Shoe compartment
Sternum strap
Luggage pass-through

Material: 500D nylon body (PVC backing), ripstop nylon internal lining, YKK zippers, powder-coated steel hardware

External lifting belt attachment with magnetic snaps
Internal shoe compartment fits up to US size 13, doubles as a wet gear zone
Padded airmesh back panel

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

Does the KNKG CORE PRO Backpack Large 33L 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	Tight fit (1.7cm spare)Tight fit (0.7in spare)	Too bigToo big	No published limitNo published limit
Air FranceCabin bag not on every fare	Tight fit (1.7cm spare)Tight fit (0.7in spare)	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	FitsFits	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	FitsFits	No published limit	No published limitNo published limit
Allegiant AirCabin bag not on every fare	Tight fit (1.7cm spare)Tight fit (0.7in spare)	Too bigToo big	No published limitNo published limit
American Airlines	FitsFits	Too bigToo big	No published limitNo published limit
ANA (All Nippon Airways)	Tight fit (1.7cm spare)Tight fit (0.7in spare)	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	Tight fit (1.7cm spare)Tight fit (0.7in spare)	No published limit	8.9kg to pack (of 10kg)19.6lb to pack (of 22lb)
British Airways	FitsFits	Too bigToo big	No published limitNo published limit
Cebu Pacific	FitsFits	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	FitsFits	No published limit	No published limitNo published limit
easyJetCabin bag not on every fare	FitsFits	Too bigToo big	13.9kg to pack (of 15kg)30.6lb to pack (of 33.1lb)
Emirates	Tight fit (1.7cm spare)Tight fit (0.7in spare)	No published limit	5.9kg to pack (of 7kg)13lb to pack (of 15.4lb)
Frontier AirlinesCabin bag not on every fare	FitsFits	Too bigToo big	14.8kg to pack (of 15.9kg)32.6lb to pack (of 35.1lb)
Gol Linhas Aereas	Tight fit (1.7cm spare)Tight fit (0.7in spare)	No published limit	8.9kg to pack (of 10kg)19.6lb to pack (of 22lb)
IndiGo	Tight fit (1.7cm spare)Tight fit (0.7in spare)	No published limit	5.9kg to pack (of 7kg)13lb to pack (of 15.4lb)
JetBlue Airways	FitsFits	Too bigToo big	No published limitNo published limit
KLMCabin bag not on every fare	Tight fit (1.7cm spare)Tight fit (0.7in spare)	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	Tight fit (1.7cm spare)Tight fit (0.7in spare)	Too bigToo big	10.9kg to pack (of 12kg)24lb to pack (of 26.5lb)
LufthansaCabin bag not on every fare	Tight fit (1.7cm spare)Tight fit (0.7in spare)	Too bigToo big	6.9kg to pack (of 8kg)15.2lb to pack (of 17.6lb)
Norwegian Air ShuttleCabin bag not on every fare	Tight fit (1.7cm spare)Tight fit (0.7in spare)	Too bigToo big	8.9kg to pack (of 10kg shared with personal item)19.6lb to pack (of 22lb shared with personal item)
Qantas	FitsFits	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	Tight fit (1.7cm spare)Tight fit (0.7in spare)	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	FitsFits	No published limit	No published limitNo published limit
Turkish Airlines	Tight fit (1.7cm spare)Tight fit (0.7in spare)	Too bigToo big	6.9kg to pack (of 8kg)15.2lb 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	5.9kg to pack (of 7kg shared with personal item)13lb to pack (of 15.4lb shared with personal item)
VolarisCabin bag not on every fare	Tight fit (1.7cm spare)Tight fit (0.7in spare)	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	FitsFits	Too bigToo big	No published limitNo published limit
Wizz AirCabin bag not on every fare	Tight fit (1.7cm spare)Tight fit (0.7in spare)	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 1.1kg2.4lb. Limits and sources. Own a different bag? Check it against every airline.