Black Ember Forge Max vs. Attitude Supply ATD2 Backpack

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

Black Ember Forge Max

Front facing view of the Black Ember Forge Max
Capacity20 L
Weight1.6 kg
Dimensions46×31×15 cm
Airline fit94%
Price$343

Feature by feature

Black Ember Forge MaxFeatureAttitude Supply ATD2 Backpack
Storage
4 Compression 4
30L Expanded Capacity 31L
1 Opening 1
back Passport front
Y Passthrough Y
Carry
hideable Backpack removable
N Hip Belt removable
removable Sternum Strap removable
Inside
15in Laptop 15in
4 Main Compartments 2
Y Organizer Y
Outside
× Hard Shell ×
N Rain-fly N
N Water Bottle Holder 2, side
Y Water Resistant Y
Material
500D CORDURA re/cor RN66 AIR TEXTURED MATTE FINISH 1000D HYPALONChallenge Sailcloth Ecopak® EPLX600

Attitude Supply ATD2 Backpack

Front facing view of the Attitude Supply ATD2 Backpack
Capacity18 L
Weight1.3 kg
Dimensions45×25×19 cm
Airline fit96%
Price$475

Key differences between the Black Ember Forge Max and Attitude Supply ATD2 Backpack

Both have: compression straps, luggage passthrough, sternum strap, laptop sleeve, built-in organizer, water resistant.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 177 accept both. 0 accept only the Black Ember Forge Max, and 4 accept only the Attitude Supply ATD2 Backpack.

Only the Attitude Supply ATD2 Backpack fits

Air Niugini, Air Tahiti, Great Lakes Airlines, Gulf Air.

Black Ember Forge Max vs. Attitude Supply ATD2 Backpack: which should you pack?

The Black Ember Forge Max carries 2L more than the Attitude Supply ATD2 Backpack (20L vs. 18L), while the Attitude Supply ATD2 Backpack is the lighter pack at 1.3kg (vs. 1.6kg). For carry-on flexibility, the Attitude Supply ATD2 Backpack fits 96% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Black Ember Forge Max; if you want to travel lighter, the Attitude Supply ATD2 Backpack is the better call.