Attitude Supply ATD2 Backpack vs. Cabin Zero Classic Plus 42L
Two carry-on travel backpacks, compared spec for spec.
Attitude Supply ATD2 Backpack
| Capacity | 18 L |
| Weight | 1.3 kg |
| Dimensions | 45×25×19 cm |
| Airline fit | 96% |
| Price | $475 |
Feature by feature
| Attitude Supply ATD2 Backpack | Feature | Cabin Zero Classic Plus 42L |
|---|---|---|
| Storage | ||
| 4 | Compression | 4 |
| 31L | Expanded Capacity | None |
| 1 | Opening | 1 |
| front | Passport | front |
| Y | Passthrough | Y |
| Carry | ||
| removable | Backpack | hideable |
| removable | Hip Belt | N |
| removable | Sternum Strap | Y |
| Inside | ||
| 15in | Laptop | 15in |
| 2 | Main Compartments | 2 |
| Y | Organizer | Y |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| 2, side | Water Bottle Holder | 1, side |
| Y | Water Resistant | Y |
| Material | |
| Challenge Sailcloth Ecopak® EPLX600 | 600 Denier Polyester |
Cabin Zero Classic Plus 42L
| Capacity | 42 L |
| Weight | 1.2 kg |
| Dimensions | 54×35×20 cm |
| Airline fit | 87% |
| Price | $122 |
Key differences between the Attitude Supply ATD2 Backpack and Cabin Zero Classic Plus 42L
- Backpack straps: Removable on the Attitude Supply ATD2 Backpack; Hideable on the Cabin Zero Classic Plus 42L.
- Hip belt: Removable on the Attitude Supply ATD2 Backpack; No on the Cabin Zero Classic Plus 42L.
- Sternum strap: Removable on the Attitude Supply ATD2 Backpack; Yes on the Cabin Zero Classic Plus 42L.
- Water bottle pockets: 2, side on the Attitude Supply ATD2 Backpack; 1, side on the Cabin Zero Classic Plus 42L.
Both have: compression straps, passport pocket, luggage passthrough, 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. 165 accept both. 16 accept only the Attitude Supply ATD2 Backpack, and 0 accept only the Cabin Zero Classic Plus 42L.
Only the Attitude Supply ATD2 Backpack fits
Air Niugini, Air Tahiti, American Eagle, Belavia, Cayman Airways, easyJet, Etihad Airways, Great Lakes Airlines, Gulf Air, Oman Air, Qatar Airways, Ravn Alaska, Regional Express, Royal Jordanian, Virgin Australia, WestJet.
Attitude Supply ATD2 Backpack vs. Cabin Zero Classic Plus 42L: which should you pack?
The Cabin Zero Classic Plus 42L carries 24L more than the Attitude Supply ATD2 Backpack (18L vs. 42L), while the Cabin Zero Classic Plus 42L is the lighter pack at 1.2kg (vs. 1.3kg). 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 Cabin Zero Classic Plus 42L; if you want to travel lighter, the Cabin Zero Classic Plus 42L is the better call.