VerBockel 'Day Pack' Roll Top Backpack 2.0

DEFY VerBockel 'Day Pack' Roll Top Backpack 2.0 is a 21L, 1.59kg3.5lb travel backpack measuring 39.4×31.8×14cm15.5×12.5×5.5in. It fits the carry-on size limit of 36 of 36 major airlines and the personal-item limit of 10 of 26. Under the seat, its 31.8cm12.5in side is over the 30cm11.8in limit at 12 of the 16 airlines it misses. Specs from defybags.com, checked October 2026.

Volume: 21Lexpands to 30L
Weight: 1.59kg3.5lb3.5lb1.59kg
Carry-on: 36/36airlines fit it
Personal item: 10/26under-seat limits

Dimensions: 39.4×31.8×14cm15.5×12.5×5.5in 15.5×12.5×5.5in39.4×31.8×14cm
Price: $299 as of October 2026
Laptop: up to 16"
Opening: Roll-top, roll-top main compartment with AustriAlpin COBRA buckle, front zip pocket
Warranty: No fixed term Defects in materials and craftsmanship for the original owner; paid repairs for wear and tear.
Compartments: n/a
Bottle pockets: n/a

Water-resistant
MOLLE

Material: 1050D MIL-SPEC ballistic nylon exterior, 1000D water-resistant silver CORDURA interior pockets, YKK AquaGuard zippers

Height 15.5 to 21.5 in (39.4 to 54.6 cm) depending on the roll; volume 21 to 30 L
Closed cell foam padded computer section
MOLLE webbing on sides and shoulder straps
Also sold in Black X-Pac and TexWax canvas

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

Does the DEFY VerBockel 'Day Pack' Roll Top Backpack 2.0 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	5.4kg to pack (of 7kg)11.9lb to pack (of 15.4lb)
Air CanadaCabin bag not on every fare	FitsFits	Tight fit (1.2cm spare)Tight fit (0.5in spare)	No published limitNo published limit
Air FranceCabin bag not on every fare	FitsFits	Too bigToo big	10.4kg to pack (of 12kg shared with personal item)22.9lb to pack (of 26.5lb shared with personal item)
Air India	FitsFits	No published limit	5.4kg to pack (of 7kg)11.9lb to pack (of 15.4lb)
AirAsia	FitsFits	Too bigToo big	5.4kg to pack (of 7kg shared with personal item)11.9lb 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	Too bigToo big	8.4kg to pack (of 10kg shared with personal item)18.5lb to pack (of 22lb shared with personal item)
AviancaCabin bag not on every fare	FitsFits	No published limit	8.4kg to pack (of 10kg)18.5lb to pack (of 22lb)
British Airways	FitsFits	FitsFits	No published limitNo published limit
Cebu Pacific	FitsFits	Too bigToo big	8.4kg to pack (of 10kg shared with personal item)18.5lb 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	13.4kg to pack (of 15kg)29.5lb to pack (of 33.1lb)
Emirates	FitsFits	No published limit	5.4kg to pack (of 7kg)11.9lb to pack (of 15.4lb)
Frontier AirlinesCabin bag not on every fare	FitsFits	FitsFits	14.3kg to pack (of 15.9kg)31.5lb to pack (of 35.1lb)
Gol Linhas Aereas	FitsFits	No published limit	8.4kg to pack (of 10kg)18.5lb to pack (of 22lb)
IndiGo	FitsFits	No published limit	5.4kg to pack (of 7kg)11.9lb to pack (of 15.4lb)
JetBlue Airways	FitsFits	Tight fit (1.2cm spare)Tight fit (0.5in spare)	No published limitNo published limit
KLMCabin bag not on every fare	FitsFits	Too bigToo big	10.4kg to pack (of 12kg shared with personal item)22.9lb to pack (of 26.5lb shared with personal item)
LATAM Airlines	FitsFits	FitsFits	10.4kg to pack (of 12kg)22.9lb to pack (of 26.5lb)
LufthansaCabin bag not on every fare	FitsFits	Too bigToo big	6.4kg to pack (of 8kg)14.1lb to pack (of 17.6lb)
Norwegian Air ShuttleCabin bag not on every fare	FitsFits	Too bigToo big	8.4kg to pack (of 10kg shared with personal item)18.5lb to pack (of 22lb shared with personal item)
Qantas	FitsFits	No published limit	5.4kg to pack (of 7kg shared with personal item)11.9lb to pack (of 15.4lb shared with personal item)
Qatar Airways	FitsFits	No published limit	5.4kg to pack (of 7kg)11.9lb to pack (of 15.4lb)
RyanairCabin bag not on every fare	FitsFits	Too bigToo big	8.4kg to pack (of 10kg)18.5lb to pack (of 22lb)
SAS	FitsFits	Too bigToo big	6.4kg to pack (of 8kg)14.1lb to pack (of 17.6lb)
Singapore Airlines	FitsFits	Too bigToo big	5.4kg to pack (of 7kg)11.9lb to pack (of 15.4lb)
Southwest Airlines	FitsFits	No published limit	No published limitNo published limit
Turkish Airlines	FitsFits	Too bigToo big	6.4kg to pack (of 8kg)14.1lb 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	5.4kg to pack (of 7kg shared with personal item)11.9lb to pack (of 15.4lb shared with personal item)
VolarisCabin bag not on every fare	FitsFits	FitsFits	8.4kg to pack (of 10kg)18.5lb to pack (of 22lb)
VuelingCabin bag not on every fare	FitsFits	Too bigToo big	8.4kg to pack (of 10kg)18.5lb to pack (of 22lb)
WestJetCabin bag not on every fare	FitsFits	Tight fit (1cm spare)Tight fit (0.4in spare)	No published limitNo published limit
Wizz AirCabin bag not on every fare	FitsFits	Too bigToo big	8.4kg to pack (of 10kg)18.5lb 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 1.59kg3.5lb. Limits and sources. Own a different bag? Check it against every airline.