---
url: "https://onebag.travel/compare/02bc32de-b553-463a-a455-177400d5423d/osprey-porter-46/3la3efqguy/stm-prime/"
title: "Osprey Porter 46 versus STM Prime - One Bag Travel"
description: "Comparison of the Osprey Porter 46 and STM Prime carry-on travel backpacks."
source: "https://onebag.travel/compare/02bc32de-b553-463a-a455-177400d5423d/osprey-porter-46/3la3efqguy/stm-prime/"
---
1.  [Home](https://onebag.travel/)
2.  [Carry-On Travel Backpacks](https://onebag.travel/carryons/)
3.  Osprey Porter 46 vs. STM Prime

# Osprey Porter 46 vs. STM Prime

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

## [Osprey Porter 46](https://onebag.travel/carryon/02bc32de-b553-463a-a455-177400d5423d/osprey-porter-46/)

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

![Front facing view of the Osprey Porter 46](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/carryons/bus8myci54gl3byfegrn)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>46 L</td></tr><tr><td>Weight</td><td>1.5 kg</td></tr><tr><td>Dimensions</td><td>55×36×23 cm</td></tr><tr><td>Airline fit</td><td>61%</td></tr><tr><td>Price</td><td>$185</td></tr></tbody></table>

## Feature by feature

| Osprey Porter 46 | Feature | STM Prime |
| --- | --- | --- |
| Storage |
| 2 | Compression | N |
| None | Expanded Capacity | None |
| 1 | Opening | 0 |
| top | Passport | top |
| Y | Passthrough | N |
| Carry |
| hideable | Backpack | Y |
| hideable | Hip Belt | N |
| Y | Sternum Strap | Y |
| Inside |
| 16in | Laptop | 13in |
| 4 | Main Compartments | 2 |
| Y | Organizer | N |
| Outside |
| × | Hard Shell | × |
| N | Rain-fly | N |
| N | Water Bottle Holder | 2, side |
| Y | Water Resistant | Y |

<table class="cmp-material"><tbody><tr><td colspan="2">Material</td></tr><tr><td>bluesign®-approved Recycled 500D Nylon Packcloth PFC Free DWR</td><td>Polyester</td></tr></tbody></table>

## [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>

We're breaking down the key differences between two top-of-the-line backpacks today, the Osprey Porter 46 and the STM Prime. Both packs have their strengths, but they appeal to different types of travelers.

The first competitor in the ring is the Osprey Porter 46, a behemoth of a bag that provides plenty of space for those who can never pack light. The main compartment clocks in at a hefty 46 liters of capacity, and the design is hotel-friendly. It's made of durable nylon and features a laptop compartment that can accommodate up to a 15" laptop. However, with larger size comes greater weight (1.5 lbs) and a reduced compatibility with airlines (47%).

-   Comparison :
    -   Size: Osprey Porter 46 is 23" x 36" x 56", while STM Prime is 42" x 26" x 13"
    -   Weight: Osprey Porter 46 weighs 1.5 lbs, STM Prime comes in at a lighter 0.7 lbs
    -   Capacity: Osprey Porter 46 has 46 liters of capacity, the STM Prime 15 liters of capacity
    -   Compatibility: The Porter is acceptable on 47% of airlines, while the STM Prime has full compatibility with 100% of airlines
    -   Material: The Osprey Porter 46 is made of Nylon, compared to the STM Prime's Polyester make
    -   Laptop Compartment: The Porter can fit a 15" laptop, where the STM Prime fits a 13" laptop

The STM Prime is our second contender, significantly smaller and lighter than the Porter. The Prime offers a capacity of 15 liters, ideal for light packers or short trips, and is made of polyester. This pack offers 100% compatibility with airlines and can house a 13" laptop in its dedicated compartment. Its reduced size doesn't significantly sacrifice features; however, it cannot match the Porter's spaciousness.

Both backpacks have received glowing reviews, with users highlighting the Porter's impressive capacity and durability, and the Prime's lightweight design and supreme compatibility. When making your choice, consider what's more important: space or weight and portability. Overall, both bags have strong perks, and it all depends on what type of traveler you are.