Osprey Nebula 32 vs. Alpha One-Niner Evade 1.5 Backpack

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

Osprey Nebula 32

Front facing view of the Osprey Nebula 32
Capacity32 L
Weight1 kg
Dimensions49×31×29 cm
Airline fit13%
Price$140

Feature by feature

Osprey Nebula 32FeatureAlpha One-Niner Evade 1.5 Backpack
Storage
4 Compression 2
None Expanded Capacity None
1 Opening 1
top Passport back
N Passthrough N
Carry
Y Backpack Y
removable Hip Belt removable
Y Sternum Strap removable
Inside
16in Laptop 16in
3 Main Compartments 5
Y Organizer Y
Outside
× Hard Shell ×
N Rain-fly N
2, side Water Bottle Holder 2, side
Y Water Resistant Y
Material
420D recycled nylon, PFAS-free DWRDimension-Polyant’s X42, Cordura 500D Nylon, 630D HD Twill

Alpha One-Niner Evade 1.5 Backpack

Front facing view of the Alpha One-Niner Evade 1.5 Backpack
Capacity22 L
Weight1.5 kg
Dimensions47×31×14 cm
Airline fit92%
Price$225

Key differences between the Osprey Nebula 32 and Alpha One-Niner Evade 1.5 Backpack

Both have: backpack straps, hip belt, laptop sleeve, built-in organizer, 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. 25 accept both. 0 accept only the Osprey Nebula 32, and 149 accept only the Alpha One-Niner Evade 1.5 Backpack.

Only the Alpha One-Niner Evade 1.5 Backpack fits

Aegean Airlines, Aer Lingus, Aeroflot, Aerolineas Argentinas, Aeromexico, Air Asia, Air Astana, Air Baltic, Air Canada, Air Caraibes, Air China, Air France, Air India, Air Macau, Air Malta, Air Mauritius, Air Nostrum, Air Serbia, Air Seychelles, Air Wisconsin, AirAsiaX, Alaska Airlines, All Nipon Airways, Allegiant Air, American Airlines, ANA, Asiana Airlines, ATA Airlines, Atlas Global, Austrian, Avianca , Azerbaijan Airlines, Bahamasair, Bangkok Airways, Belavia, Biman Bangladesh, Blue Air, Boliviana de Aviacion, British Airways, Brussels Airlines, Bulgaria Air, Cambodia Angkor Air, Cathay Pacific, Cayman Airways, Cebu Pacific, China Airlines, China Eastern, CommutAir, Conviasa, Copa Airlines, Czech Airlines, Delta Airlines, Dragonair, EL AL, Emirates Airlines, Enter Air, Ethiopian Airlines, Etihad Airways, Eurowings, EVA Air, Fiji Airways, Finnair, Flair Air, flybe, Frontier Airlines, Garuda Indonesia, Gol Linhas Aereas, Hawaiian Airlines, Hong Kong Airlines, Iberia, Icelandair, Indigo, InselAir, Interjet, Iran Air, Iran Aseman Air, Island Air, Japan Airlines, Jet Airways, Jet2, jetBlue Airways, Jetstar Airways, Jetstar Asia, Juneyao Airlines, Kenya Airways, KLM, Kulula, Kuwait Air, LATAM , Liat Airlines, LOT Polish, Lufthansa, Luxair, Mahan Air, Malaysia Airlines, Mango, Meridiana Fly, Mesa Airlines, Middle East Airlines, Monarch Airlines, Nordwind Airlines, Norwegian, Oman Air, Onur Air, Pakistan International, Peach, PenAir, Porter Airlines, Qantas Airways, Qatar Airways, Regional Express, Republic Airways, Royal Brunei Airlines, Royal Jordanian, Ryanair, S7, SAS Scandinavian, Scoot, Shandong Airlines, Shenzhen Airlines, Sky Airlines, Skywest, Inc., South African Airways, Southwest Airlines, Spirit Airlines, SriLankan Airlines, Sun Country, Sun Express, Swiss Int'l Air Lines, TAP Air Portugal, TAROM, Thai Airways, Tianjin Airlines (A320 & E190), Tiger Airways, Trans States, Travel Service Airlines, TUI, Turkish Airlines, Ukraine International, United Airlines, Uzbekistan Air, Vietnam Airlines, VIM Airlines (Closed), Virgin Atlantic, Virgin Australia, Volotea, WestJet, WOW Airlines, Xiamen.

Osprey Nebula 32 vs. Alpha One-Niner Evade 1.5 Backpack: which should you pack?

The Osprey Nebula 32 carries 10L more than the Alpha One-Niner Evade 1.5 Backpack (32L vs. 22L), while the Osprey Nebula 32 is the lighter pack at 1kg (vs. 1.5kg). For carry-on flexibility, the Alpha One-Niner Evade 1.5 Backpack fits 92% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Osprey Nebula 32; if you want to travel lighter, the Osprey Nebula 32 is the better call.