STM Trilogy vs. STM Grace
Two carry-on travel backpacks, compared spec for spec.
Feature by feature
| STM Trilogy | Feature | STM Grace |
|---|---|---|
| Storage | ||
| N | Compression | N |
| None | Expanded Capacity | None |
| 4 | Opening | 4 |
| N | Passport | N |
| N | Passthrough | N |
| Carry | ||
| Y | Backpack | Y |
| N | Hip Belt | N |
| N | Sternum Strap | N |
| Inside | ||
| 15in | Laptop | 15in |
| 1 | Main Compartments | 1 |
| Y | Organizer | Y |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| 2 | Water Bottle Holder | N |
| Y | Water Resistant | Y |
| Material | |
| 100% polyester | 100% polyester |
Key differences between the STM Trilogy and STM Grace
- Water bottle pockets: 2 on the STM Trilogy; No on the STM Grace.
Both have: backpack straps, laptop sleeve, built-in organizer, water resistant.
Which airlines take each bag as a carry-on
We checked both bags against the carry-on size limits of 189 airlines. 178 accept both. 0 accept only the STM Trilogy, and 2 accept only the STM Grace.
Only the STM Grace fits
Air Tahiti, Gulf Air.
STM Trilogy vs. STM Grace: which should you pack?
The STM Trilogy carries 4L more than the STM Grace (24L vs. 20L), while the STM Grace is the lighter pack at 0.6kg (vs. 0.64kg). For carry-on flexibility, the STM Grace fits 95% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the STM Trilogy; if you want to travel lighter, the STM Grace is the better call.