A4U Sling 2.0

Pioneer Carry A4U Sling 2.0 is a 2.5L, 0.23kg0.5lb sling measuring 20.3×31.8×8.9cm8×12.5×3.5in. It fits the carry-on size limit of 36 of 36 major airlines and the personal-item limit of 24 of 26. Under the seat, its 20.3cm8in side is over the 20cm7.9in limit at all 2 airlines it misses. Specs from pioneercarry.com, checked October 2026.

Volume: 2.5Lfixed size
Weight: 0.23kg0.5lb0.5lb0.23kg
Carry-on: 36/36airlines fit it
Personal item: 24/26under-seat limits

Dimensions: 20.3×31.8×8.9cm8×12.5×3.5in 8×12.5×3.5in20.3×31.8×8.9cm
Price: $139 as of October 2026
Laptop: n/a
Opening: n/a
Warranty: Lifetime Million Mile Lifetime Guarantee on packs against defects in workmanship or materials; accessories covered up to 3 years.
Compartments: n/a
Bottle pockets: n/a

Material: 640D Baby Ballistic nylon shell, 3XD and 100% HD nylon twill lining

Fits A4 sized items including current regular sized iPads
Depth listed as 2.5 to 3.5 in; the larger value is used
Lining is 3XD and 100% HD nylon twill

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

Does the Pioneer Carry A4U Sling 2.0 fit airline carry-on limits?

Draw against

Fits under the seatFits under the seat 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	Tight fit (1.2cm spare)Tight fit (0.5in spare)	6.8kg to pack (of 7kg)15lb to pack (of 15.4lb)
Air CanadaCabin bag not on every fare	FitsFits	FitsFits	No published limitNo published limit
Air FranceCabin bag not on every fare	FitsFits	FitsFits	11.8kg to pack (of 12kg shared with personal item)26lb to pack (of 26.5lb shared with personal item)
Air India	FitsFits	No published limit	6.8kg to pack (of 7kg)15lb to pack (of 15.4lb)
AirAsia	FitsFits	Tight fit (1.1cm spare)Tight fit (0.4in spare)	6.8kg to pack (of 7kg shared with personal item)15lb 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	FitsFits	No published limitNo published limit
American Airlines	FitsFits	FitsFits	No published limitNo published limit
ANA (All Nippon Airways)	FitsFits	FitsFits	9.8kg to pack (of 10kg shared with personal item)21.6lb to pack (of 22lb shared with personal item)
AviancaCabin bag not on every fare	FitsFits	No published limit	9.8kg to pack (of 10kg)21.6lb to pack (of 22lb)
British Airways	FitsFits	FitsFits	No published limitNo published limit
Cebu Pacific	FitsFits	Too bigToo big	9.8kg to pack (of 10kg shared with personal item)21.6lb 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	FitsFits	14.8kg to pack (of 15kg)32.6lb to pack (of 33.1lb)
Emirates	FitsFits	No published limit	6.8kg to pack (of 7kg)15lb to pack (of 15.4lb)
Frontier AirlinesCabin bag not on every fare	FitsFits	FitsFits	15.7kg to pack (of 15.9kg)34.6lb to pack (of 35.1lb)
Gol Linhas Aereas	FitsFits	No published limit	9.8kg to pack (of 10kg)21.6lb to pack (of 22lb)
IndiGo	FitsFits	No published limit	6.8kg to pack (of 7kg)15lb to pack (of 15.4lb)
JetBlue Airways	FitsFits	FitsFits	No published limitNo published limit
KLMCabin bag not on every fare	FitsFits	FitsFits	11.8kg to pack (of 12kg shared with personal item)26lb to pack (of 26.5lb shared with personal item)
LATAM Airlines	FitsFits	FitsFits	11.8kg to pack (of 12kg)26lb to pack (of 26.5lb)
LufthansaCabin bag not on every fare	FitsFits	FitsFits	7.8kg to pack (of 8kg)17.2lb to pack (of 17.6lb)
Norwegian Air ShuttleCabin bag not on every fare	FitsFits	FitsFits	9.8kg to pack (of 10kg shared with personal item)21.6lb to pack (of 22lb shared with personal item)
Qantas	FitsFits	No published limit	6.8kg to pack (of 7kg shared with personal item)15lb to pack (of 15.4lb shared with personal item)
Qatar Airways	FitsFits	No published limit	6.8kg to pack (of 7kg)15lb to pack (of 15.4lb)
RyanairCabin bag not on every fare	FitsFits	FitsFits	9.8kg to pack (of 10kg)21.6lb to pack (of 22lb)
SAS	FitsFits	FitsFits	7.8kg to pack (of 8kg)17.2lb to pack (of 17.6lb)
Singapore Airlines	FitsFits	Tight fit (1.1cm spare)Tight fit (0.4in spare)	6.8kg to pack (of 7kg)15lb to pack (of 15.4lb)
Southwest Airlines	FitsFits	No published limit	No published limitNo published limit
Turkish Airlines	FitsFits	FitsFits	7.8kg to pack (of 8kg)17.2lb to pack (of 17.6lb)
United AirlinesCabin bag not on every fare	FitsFits	FitsFits	No published limitNo published limit
Vietjet Air	FitsFits	Too bigToo big	6.8kg to pack (of 7kg shared with personal item)15lb to pack (of 15.4lb shared with personal item)
VolarisCabin bag not on every fare	FitsFits	FitsFits	9.8kg to pack (of 10kg)21.6lb to pack (of 22lb)
VuelingCabin bag not on every fare	FitsFits	FitsFits	9.8kg to pack (of 10kg)21.6lb to pack (of 22lb)
WestJetCabin bag not on every fare	FitsFits	FitsFits	No published limitNo published limit
Wizz AirCabin bag not on every fare	FitsFits	FitsFits	9.8kg to pack (of 10kg)21.6lb 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 0.23kg0.5lb. Limits and sources. Own a different bag? Check it against every airline.