Aer Pro Slim Pack vs. Aer Day Pack 3
Two carry-on travel backpacks, compared spec for spec.
Feature by feature
| Aer Pro Slim Pack | Feature | Aer Day Pack 3 |
|---|---|---|
| Storage | ||
| N | Compression | N |
| None | Expanded Capacity | None |
| 1 | Opening | 1 |
| front | Passport | top |
| Y | Passthrough | Y |
| Carry | ||
| Y | Backpack | Y |
| N | Hip Belt | N |
| Y | Sternum Strap | Y |
| Inside | ||
| 16in | Laptop | 16in |
| 3 | Main Compartments | 3 |
| Y | Organizer | N |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| 1, side | Water Bottle Holder | 1, side |
| Y | Water Resistant | Y |
| Material | |
| 840D CORDURA re/cor recycled nylon | 1680D Cordura® ballistic nylon exterior (bluesign® approved) |
Key differences between the Aer Pro Slim Pack and Aer Day Pack 3
- Passport pocket: Front on the Aer Pro Slim Pack; Top on the Aer Day Pack 3.
- Built-in organizer: Yes on the Aer Pro Slim Pack; No on the Aer Day Pack 3.
Both have: luggage passthrough, backpack straps, sternum strap, 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. 179 accept both. 0 accept only the Aer Pro Slim Pack, and 1 accept only the Aer Day Pack 3.
Only the Aer Day Pack 3 fits
Air Niugini.
Aer Pro Slim Pack vs. Aer Day Pack 3: which should you pack?
The Aer Day Pack 3 carries 1L more than the Aer Pro Slim Pack (13L vs. 14L), while the Aer Pro Slim Pack is the lighter pack at 0.9kg (vs. 1.3kg). For carry-on flexibility, the Aer Pro Slim Pack fits 95% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Aer Day Pack 3; if you want to travel lighter, the Aer Pro Slim Pack is the better call.