Aer Duffel Pack 3 X-Pac vs. Moment Everything Backpack 21L Overnight
Two carry-on travel backpacks, compared spec for spec.
Aer Duffel Pack 3 X-Pac
| Capacity | 21 L |
| Weight | 1.3 kg |
| Dimensions | 52×30×20 cm |
| Airline fit | 88% |
| Price | $210 |
Feature by feature
| Aer Duffel Pack 3 X-Pac | Feature | Moment Everything Backpack 21L Overnight |
|---|---|---|
| Storage | ||
| N | Compression | N |
| None | Expanded Capacity | None |
| 0 | Opening | 0 |
| top, side | Passport | front |
| Y | Passthrough | Y |
| Carry | ||
| Y | Backpack | Y |
| N | Hip Belt | N |
| removable | Sternum Strap | Y |
| Inside | ||
| 16in | Laptop | 16in |
| 5 | 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 | |
| VX-42 X-Pac (also in 1680D Cordura) | 420D Nylon Fabric |
Moment Everything Backpack 21L Overnight
| Capacity | 21 L |
| Weight | 0.8 kg |
| Dimensions | 47×29×15 cm |
| Airline fit | 93% |
| Price | $150 |
Key differences between the Aer Duffel Pack 3 X-Pac and Moment Everything Backpack 21L Overnight
- Passport pocket: Top, side on the Aer Duffel Pack 3 X-Pac; Front on the Moment Everything Backpack 21L Overnight.
- Sternum strap: Removable on the Aer Duffel Pack 3 X-Pac; Yes on the Moment Everything Backpack 21L Overnight.
- Main compartments: 5 on the Aer Duffel Pack 3 X-Pac; 3 on the Moment Everything Backpack 21L Overnight.
- Built-in organizer: Yes on the Aer Duffel Pack 3 X-Pac; No on the Moment Everything Backpack 21L Overnight.
Both have: luggage passthrough, backpack straps, 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. 167 accept both. 0 accept only the Aer Duffel Pack 3 X-Pac, and 8 accept only the Moment Everything Backpack 21L Overnight.
Only the Moment Everything Backpack 21L Overnight fits
Air Niugini, Belavia, Etihad Airways, Oman Air, Qatar Airways, Regional Express, Royal Jordanian, Virgin Australia.
Aer Duffel Pack 3 X-Pac vs. Moment Everything Backpack 21L Overnight: which should you pack?
The Aer Duffel Pack 3 X-Pac carries the same capacity as the Moment Everything Backpack 21L Overnight (21L vs. 21L), while the Moment Everything Backpack 21L Overnight is the lighter pack at 0.8kg (vs. 1.3kg). For carry-on flexibility, the Moment Everything Backpack 21L Overnight fits 93% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Aer Duffel Pack 3 X-Pac; if you want to travel lighter, the Moment Everything Backpack 21L Overnight is the better call.