REI Co-op Ruckpack 18 vs. Millican Smith 18L
Two carry-on travel backpacks, compared spec for spec.
REI Co-op Ruckpack 18
| Capacity | 18 L |
| Weight | 0.7 kg |
| Dimensions | 44×26×18 cm |
| Airline fit | 96% |
| Price | $65 |
Feature by feature
| REI Co-op Ruckpack 18 | Feature | Millican Smith 18L |
|---|---|---|
| Storage | ||
| Compression | N | |
| None | Expanded Capacity | None |
| 0 | Opening | 2 |
| side | Passport | side |
| N | Passthrough | N |
| Carry | ||
| Backpack | Y | |
| removable | Hip Belt | removable |
| removable | Sternum Strap | removable |
| Inside | ||
| 15in | Laptop | 15in |
| 2 | Main Compartments | 3 |
| Y | Organizer | N |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| Water Bottle Holder | N | |
| Y | Water Resistant | Y |
| Material | |
| 210-denier nylon ripstop | Weatherproof Bionic Canvas |
Millican Smith 18L
| Capacity | 18 L |
| Weight | 0.9 kg |
| Dimensions | 50×28×10 cm |
| Airline fit | 92% |
| Price | $130 |
Key differences between the REI Co-op Ruckpack 18 and Millican Smith 18L
- Opening: Other on the REI Co-op Ruckpack 18; Rolltop on the Millican Smith 18L.
- Main compartments: 2 on the REI Co-op Ruckpack 18; 3 on the Millican Smith 18L.
- Built-in organizer: Yes on the REI Co-op Ruckpack 18; No on the Millican Smith 18L.
Both have: passport pocket, hip belt, 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. 7 accept only the REI Co-op Ruckpack 18, and 0 accept only the Millican Smith 18L.
Only the REI Co-op Ruckpack 18 fits
Air Tahiti, American Eagle, easyJet, Gulf Air, Ravn Alaska, Regional Express, Virgin Australia.
REI Co-op Ruckpack 18 vs. Millican Smith 18L: which should you pack?
The REI Co-op Ruckpack 18 carries the same capacity as the Millican Smith 18L (18L vs. 18L), while the REI Co-op Ruckpack 18 is the lighter pack at 0.7kg (vs. 0.9kg). For carry-on flexibility, the REI Co-op Ruckpack 18 fits 96% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the REI Co-op Ruckpack 18; if you want to travel lighter, the REI Co-op Ruckpack 18 is the better call.