Tortuga Outbreaker Backpack 45L vs. ULA Equipment Ultra 36L Dragonfly

Two carry-on travel backpacks, compared spec for spec.

Tortuga Outbreaker Backpack 45L

Capacity45 L
Weight2.3 kg
Dimensions56×36×23 cm
Airline fit45%
Price$350

Feature by feature

Tortuga Outbreaker Backpack 45LFeatureULA Equipment Ultra 36L Dragonfly
Storage
N Compression 2
None Expanded Capacity None
1 Opening 1
front Passport top
N Passthrough N
Carry
Y Backpack Y
removable Hip Belt removable
Y Sternum Strap removable
Inside
17in Laptop 17in
4 Main Compartments 4
Y Organizer N
Outside
× Hard Shell ×
N Rain-fly N
2, side Water Bottle Holder 2, side
Y Water Resistant Y
Material
X-Pac VX21Challenge ULTRA, ULTRA TX, UltraStretch

ULA Equipment Ultra 36L Dragonfly

Front facing view of the ULA Equipment Ultra 36L Dragonfly
Capacity36 L
Weight0.9 kg
Dimensions52×30×19 cm
Airline fit88%
Price$320

Key differences between the Tortuga Outbreaker Backpack 45L and ULA Equipment Ultra 36L Dragonfly

Both have: backpack straps, hip belt, laptop sleeve, water bottle pockets, water resistant.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 85 accept both. 0 accept only the Tortuga Outbreaker Backpack 45L, and 82 accept only the ULA Equipment Ultra 36L Dragonfly.

Only the ULA Equipment Ultra 36L Dragonfly fits

Aer Lingus, Aeroflot, Aerolineas Argentinas, Aeromexico, Air Baltic, Air Canada, Air Caraibes, Air China, Air France, Air India, Air Malta, Air Mauritius, Air Serbia, Air Seychelles, All Nipon Airways, ANA, Asiana Airlines, ATA Airlines, Austrian, Azerbaijan Airlines, Blue Air, Boliviana de Aviacion, Brussels Airlines, Bulgaria Air, Caribbean Airlines, Cayman Airways, China Eastern, Croatia Air, Czech Airlines, Emirates Airlines, Enter Air, Ethiopian Airlines, Eurowings, Fiji Airways, Flair Air, flybe, Gol Linhas Aereas, Iberia, Icelandair, Indigo, InselAir, Interjet, Iran Air, Japan Airlines, Jet Airways, Juneyao Airlines, Kenya Airways, KLM, LATAM , Liat Airlines, LOT Polish, Lufthansa, Luxair, Mahan Air, Meridiana Fly, Mesa Airlines, Nordwind Airlines, Norwegian, Pakistan International, Peach, Porter Airlines, Royal Brunei Airlines, Ryanair, S7, SAS Scandinavian, Scoot, Shandong Airlines, Shenzhen Airlines, Sky Airlines, Sun Express, Swiss Int'l Air Lines, TAP Air Portugal, TAROM, Tianjin Airlines (A320 & E190), Tiger Airways, TUI, Turkish Airlines, Ukraine International, VIM Airlines (Closed), Volotea, WestJet, Xiamen.

Tortuga Outbreaker Backpack 45L vs. ULA Equipment Ultra 36L Dragonfly: which should you pack?

The Tortuga Outbreaker Backpack 45L carries 9L more than the ULA Equipment Ultra 36L Dragonfly (45L vs. 36L), while the ULA Equipment Ultra 36L Dragonfly is the lighter pack at 0.9kg (vs. 2.3kg). For carry-on flexibility, the ULA Equipment Ultra 36L Dragonfly fits 88% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Tortuga Outbreaker Backpack 45L; if you want to travel lighter, the ULA Equipment Ultra 36L Dragonfly is the better call.