Aer Day Pack 3 vs. Ministry of Supply Boston One
Two carry-on travel backpacks, compared spec for spec.
Feature by feature
| Aer Day Pack 3 | Feature | Ministry of Supply Boston One |
|---|---|---|
| Storage | ||
| N | Compression | N |
| None | Expanded Capacity | None |
| 1 | Opening | 1 |
| top | Passport | top |
| Y | Passthrough | Y |
| Carry | ||
| Y | Backpack | hideable |
| 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 | 1, internal |
| Y | Water Resistant | Y |
| Material | |
| 1680D Cordura® ballistic nylon exterior (bluesign® approved) | 900D 100% polyester shell |
Ministry of Supply Boston One
| Capacity | 28 L |
| Weight | 1.1 kg |
| Dimensions | 47×30×20 cm |
| Airline fit | 93% |
| Price | $250 |
Key differences between the Aer Day Pack 3 and Ministry of Supply Boston One
- Backpack straps: Yes on the Aer Day Pack 3; Hideable on the Ministry of Supply Boston One.
- Main compartments: 3 on the Aer Day Pack 3; 4 on the Ministry of Supply Boston One.
- Water bottle pockets: 1, side on the Aer Day Pack 3; 1, internal on the Ministry of Supply Boston One.
Both have: passport pocket, luggage passthrough, 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. 175 accept both. 5 accept only the Aer Day Pack 3, and 0 accept only the Ministry of Supply Boston One.
Only the Aer Day Pack 3 fits
Air Tahiti, American Eagle, easyJet, Gulf Air, Ravn Alaska.
Aer Day Pack 3 vs. Ministry of Supply Boston One: which should you pack?
The Ministry of Supply Boston One carries 14L more than the Aer Day Pack 3 (14L vs. 28L), while the Ministry of Supply Boston One is the lighter pack at 1.1kg (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 Ministry of Supply Boston One; if you want to travel lighter, the Ministry of Supply Boston One is the better call.