Moment Everything Backpack 21L Overnight vs. Aer Day Pack 3
Two carry-on travel backpacks, compared spec for spec.
Moment Everything Backpack 21L Overnight
| Capacity | 21 L |
| Weight | 0.8 kg |
| Dimensions | 47×29×15 cm |
| Airline fit | 93% |
| Price | $150 |
Feature by feature
| Moment Everything Backpack 21L Overnight | Feature | Aer Day Pack 3 |
|---|---|---|
| Storage | ||
| N | Compression | N |
| None | Expanded Capacity | None |
| 0 | 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 |
| N | Organizer | N |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| 1, side | Water Bottle Holder | 1, side |
| Y | Water Resistant | Y |
| Material | |
| 420D Nylon Fabric | 1680D Cordura® ballistic nylon exterior (bluesign® approved) |
Key differences between the Moment Everything Backpack 21L Overnight and Aer Day Pack 3
- Opening: Other on the Moment Everything Backpack 21L Overnight; Clamshell on the Aer Day Pack 3.
- Passport pocket: Front on the Moment Everything Backpack 21L Overnight; Top 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. 175 accept both. 0 accept only the Moment Everything Backpack 21L Overnight, and 5 accept only the Aer Day Pack 3.
Only the Aer Day Pack 3 fits
Air Tahiti, American Eagle, easyJet, Gulf Air, Ravn Alaska.
Moment Everything Backpack 21L Overnight vs. Aer Day Pack 3: which should you pack?
The Moment Everything Backpack 21L Overnight carries 7L more than the Aer Day Pack 3 (21L vs. 14L), while the Moment Everything Backpack 21L Overnight is the lighter pack at 0.8kg (vs. 1.3kg). For carry-on flexibility, the Aer Day Pack 3 fits 95% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Moment Everything Backpack 21L Overnight; if you want to travel lighter, the Moment Everything Backpack 21L Overnight is the better call.