Moment Everything Backpack 21L Overnight vs. STM Good Myth Backpack 28L
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 | STM Good Myth Backpack 28L |
|---|---|---|
| Storage | ||
| N | Compression | N |
| None | Expanded Capacity | None |
| 0 | Opening | 0 |
| front | Passport | N |
| Y | Passthrough | Y |
| Carry | ||
| Y | Backpack | Y |
| N | Hip Belt | N |
| Y | Sternum Strap | Y |
| Inside | ||
| 16in | Laptop | 16in |
| 3 | Main Compartments | 4 |
| N | Organizer | N |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| 1, side | Water Bottle Holder | 2 |
| Y | Water Resistant | Y |
| Material | |
| 420D Nylon Fabric | 100% polyester |
STM Good Myth Backpack 28L
| Capacity | 28 L |
| Weight | 1.2 kg |
| Dimensions | 46×31×18 cm |
| Airline fit | 94% |
| Price | $140 |
Key differences between the Moment Everything Backpack 21L Overnight and STM Good Myth Backpack 28L
- Passport pocket: Front on the Moment Everything Backpack 21L Overnight; No on the STM Good Myth Backpack 28L.
- Main compartments: 3 on the Moment Everything Backpack 21L Overnight; 4 on the STM Good Myth Backpack 28L.
- Water bottle pockets: 1, side on the Moment Everything Backpack 21L Overnight; 2 on the STM Good Myth Backpack 28L.
Both have: luggage passthrough, backpack straps, sternum strap, laptop sleeve, water resistant.
Which airlines take each bag as a carry-on
We checked both bags against the carry-on size limits of 189 airlines. 174 accept both. 1 accept only the Moment Everything Backpack 21L Overnight, and 3 accept only the STM Good Myth Backpack 28L.
Only the Moment Everything Backpack 21L Overnight fits
Air Niugini.
Only the STM Good Myth Backpack 28L fits
American Eagle, easyJet, Ravn Alaska.
Moment Everything Backpack 21L Overnight vs. STM Good Myth Backpack 28L: which should you pack?
The STM Good Myth Backpack 28L carries 7L more than the Moment Everything Backpack 21L Overnight (21L vs. 28L), while the Moment Everything Backpack 21L Overnight is the lighter pack at 0.8kg (vs. 1.2kg). For carry-on flexibility, the STM Good Myth Backpack 28L fits 94% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the STM Good Myth Backpack 28L; if you want to travel lighter, the Moment Everything Backpack 21L Overnight is the better call.