GORUCK GR1 USA - X-PAC vs. Millican Smith 18L
Two carry-on travel backpacks, compared spec for spec.
GORUCK GR1 USA - X-PAC
| Capacity | 21 L |
| Weight | 1 kg |
| Dimensions | 46×29×14 cm |
| Airline fit | 94% |
| Price | $335 |
Feature by feature
| GORUCK GR1 USA - X-PAC | Feature | Millican Smith 18L |
|---|---|---|
| Storage | ||
| N | Compression | N |
| None | Expanded Capacity | None |
| 1 | Opening | 2 |
| top | Passport | side |
| N | Passthrough | N |
| Carry | ||
| Y | Backpack | Y |
| N | Hip Belt | removable |
| N | Sternum Strap | removable |
| Inside | ||
| 15in | Laptop | 15in |
| 3 | Main Compartments | 3 |
| N | Organizer | N |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| N | Water Bottle Holder | N |
| Y | Water Resistant | Y |
| Material | |
| XPAC VX21 | 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 GORUCK GR1 USA - X-PAC and Millican Smith 18L
- Opening: Clamshell on the GORUCK GR1 USA - X-PAC; Rolltop on the Millican Smith 18L.
- Passport pocket: Top on the GORUCK GR1 USA - X-PAC; Side on the Millican Smith 18L.
- Hip belt: No on the GORUCK GR1 USA - X-PAC; Removable on the Millican Smith 18L.
- Sternum strap: No on the GORUCK GR1 USA - X-PAC; Removable on the Millican Smith 18L.
Both have: backpack straps, 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. 173 accept both. 5 accept only the GORUCK GR1 USA - X-PAC, and 1 accept only the Millican Smith 18L.
Only the GORUCK GR1 USA - X-PAC fits
American Eagle, easyJet, Ravn Alaska, Regional Express, Virgin Australia.
Only the Millican Smith 18L fits
Great Lakes Airlines.
GORUCK GR1 USA - X-PAC vs. Millican Smith 18L: which should you pack?
The GORUCK GR1 USA - X-PAC carries 3L more than the Millican Smith 18L (21L vs. 18L), while the Millican Smith 18L is the lighter pack at 0.9kg (vs. 1kg). For carry-on flexibility, the GORUCK GR1 USA - X-PAC fits 94% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the GORUCK GR1 USA - X-PAC; if you want to travel lighter, the Millican Smith 18L is the better call.