---
url: "https://onebag.travel/compare/3la3efqguy/stm-prime/qn7qhe8n7r/gossamer-gear-loris-25-daypack/"
title: "STM Prime vs Gossamer Gear Loris 25 Daypack - One Bag Travel"
description: "STM Prime vs Gossamer Gear Loris 25 Daypack: capacity, weight, dimensions and how many airlines accept each as a carry-on, side by side."
source: "https://onebag.travel/compare/3la3efqguy/stm-prime/qn7qhe8n7r/gossamer-gear-loris-25-daypack/"
---
1.  [Home](https://onebag.travel/)
2.  [Carry-On Travel Backpacks](https://onebag.travel/carryons/)
3.  STM Prime vs. Gossamer Gear Loris 25 Daypack

# STM Prime vs. Gossamer Gear Loris 25 Daypack

Two carry-on travel backpacks, compared spec for spec.

## [STM Prime](https://onebag.travel/carryon/3la3efqguy/stm-prime/)

![Front facing view of the STM Prime](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1601123578/carryons/stmprime_yfxzkc.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>15 L</td></tr><tr><td>Weight</td><td>0.7 kg</td></tr><tr><td>Dimensions</td><td>42×26×13 cm</td></tr><tr><td>Airline fit</td><td>96%</td></tr><tr><td>Price</td><td>$80</td></tr></tbody></table>

## Feature by feature

| STM Prime | Feature | Gossamer Gear Loris 25 Daypack |
| --- | --- | --- |
| Storage |
| N | Compression | 4 |
| None | Expanded Capacity | None |
| 0 | Opening | 0 |
| top | Passport | top |
| N | Passthrough | N |
| Carry |
| Y | Backpack | Y |
| N | Hip Belt | removable |
| Y | Sternum Strap | Y |
| Inside |
| 13in | Laptop | N |
| 2 | Main Compartments | 2 |
| N | Organizer | N |
| Outside |
| × | Hard Shell | × |
| N | Rain-fly | N |
| 2, side | Water Bottle Holder | 2, side |
| Y | Water Resistant | Y |

<table class="cmp-material"><tbody><tr><td colspan="2">Material</td></tr><tr><td>Polyester</td><td>70D Recycled Robic Nylon PFAS-free</td></tr></tbody></table>

## [Gossamer Gear Loris 25 Daypack](https://onebag.travel/carryon/qn7qhe8n7r/gossamer-gear-loris-25-daypack/)

by [Gossamer Gear](https://onebag.travel/carryons/?brands=Gossamer Gear)

![Front facing view of the Gossamer Gear Loris 25 Daypack](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1788990481/carryons/gossamer-gear-loris-25-daypack-qn7qhe8n7r.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>25 L</td></tr><tr><td>Weight</td><td>0.6 kg</td></tr><tr><td>Dimensions</td><td>46×28×17 cm</td></tr><tr><td>Airline fit</td><td>95%</td></tr><tr><td>Price</td><td>$135</td></tr></tbody></table>

## Key differences between the STM Prime and Gossamer Gear Loris 25 Daypack

-   **Compression straps:** No on the STM Prime; 4 on the Gossamer Gear Loris 25 Daypack.
-   **Hip belt:** No on the STM Prime; Removable on the Gossamer Gear Loris 25 Daypack.
-   **Laptop sleeve:** 13in on the STM Prime; No on the Gossamer Gear Loris 25 Daypack.

Both have: passport pocket, backpack straps, sternum strap, water bottle pockets, water resistant.

## Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 179 accept both. 2 accept only the STM Prime, and 0 accept only the Gossamer Gear Loris 25 Daypack.

### Only the STM Prime fits

Air Tahiti, Gulf Air.

## STM Prime vs. Gossamer Gear Loris 25 Daypack: which should you pack?

The **Gossamer Gear Loris 25 Daypack** carries 10L more than the **STM Prime** (15L vs. 25L), while the **Gossamer Gear Loris 25 Daypack** is the lighter pack at 0.6kg (vs. 0.7kg). For carry-on flexibility, the **STM Prime** fits 96% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Gossamer Gear Loris 25 Daypack; if you want to travel lighter, the Gossamer Gear Loris 25 Daypack is the better call.