Alpha One-Niner Evade 1.5 Backpack vs. Alpha One-Niner SERT, PENUMBRA 2.0 Backpack

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

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

Feature by feature

Alpha One-Niner Evade 1.5 BackpackFeatureAlpha One-Niner SERT, PENUMBRA 2.0 Backpack
Storage
2 Compression 2
None Expanded Capacity None
1 Opening 1
back Passport front
N Passthrough Y
Carry
Y Backpack Y
removable Hip Belt optional
removable Sternum Strap removable
Inside
16in Laptop 16in
5 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
Dimension-Polyant’s X42, Cordura 500D Nylon, 630D HD TwillAvailable in: X-Pac X42, 500D, 630D HD

Alpha One-Niner SERT, PENUMBRA 2.0 Backpack

Front facing view of the Alpha One-Niner SERT, PENUMBRA 2.0 Backpack
Capacity21 L
Weight1.5 kg
Dimensions47×30×14 cm
Airline fit93%
Price$255

Key differences between the Alpha One-Niner Evade 1.5 Backpack and Alpha One-Niner SERT, PENUMBRA 2.0 Backpack

Both have: compression straps, backpack straps, sternum strap, 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. 174 accept both. 0 accept only the Alpha One-Niner Evade 1.5 Backpack, and 1 accept only the Alpha One-Niner SERT, PENUMBRA 2.0 Backpack.

Only the Alpha One-Niner SERT, PENUMBRA 2.0 Backpack fits

Air Niugini.

Alpha One-Niner Evade 1.5 Backpack vs. Alpha One-Niner SERT, PENUMBRA 2.0 Backpack: which should you pack?

The Alpha One-Niner Evade 1.5 Backpack carries 1L more than the Alpha One-Niner SERT, PENUMBRA 2.0 Backpack (22L vs. 21L), while the Alpha One-Niner Evade 1.5 Backpack is the lighter pack at 1.5kg (vs. 1.5kg). For carry-on flexibility, the Alpha One-Niner SERT, PENUMBRA 2.0 Backpack fits 93% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Alpha One-Niner Evade 1.5 Backpack; if you want to travel lighter, the Alpha One-Niner Evade 1.5 Backpack is the better call.