The Gregory Aerio 24 Daypack is an ideal day-length pack that combines a clean, modern design without any compromise on performance, accessibility or comfort. It is designed to support dynamic motion and provide optimal comfort on the trail, making it a great choice for both outdoor enthusiasts and urban users.
- Size:Unisex
- Type: Ventilated Mesh Back
- Access: Clam-shell zipper
- Pockets: 1 closed, 3 open and main
- Ready to Hydrate: Yes
Design and fit
The Arrio 24 offers a body-hugging fit that supports natural movement thanks to its advanced suspension system. The back panel features Gregory’s mesh back panel technology, which uses tensioned, engineered mesh for airflow and body-map support. This progressive mesh, combined with the frame-supported back panel, ensures optimized airflow, stability and temperature regulation, helping to keep the wearer more comfortable even during strenuous activity.
The shoulder harness enhances breathability with perforated foam and open mesh, while the elastic hipbelt provides flexible, stable support as you move. Together, these features reduce fatigue by distributing weight evenly and allowing heat and moisture to dissipate efficiently.
Comfort and stability features
The sternum stability strap includes an integrated safety whistle and a hydration hose routing clip for convenience and safety on the trail. The internal hydration sleeve is equipped with a hydration hanger compatible with Gregory Hydro or other third-party reservoirs (not included), making hydration easier and safer. However, I prefer using bottles with this pack, as the side pockets are large and easily accessible.
Molded zipper pulls improve handling and utility, while webbing strap keepers help neatly manage straps for a clean appearance and improved functionality. Reflective attachment loops on the front increase visibility for morning or evening use, increasing safety.
storage access
The Aerio 24 is thoughtfully organized for accessibility and efficient packing. It features a clamshell-style main compartment for quick access to items without having to take off the entire pack to find something. It has enough storage to fit all my hiking layers in mountainous terrain, including extra insulation layers, my rain gear, my first aid kit, and extra sun protection.
The front pull pocket also allows for stuffing loose layers when I want to take off clothes and don’t feel like stopping to pack them into the main compartment of the pack. It has an exterior zippered pocket on top to hold my sunglasses and wallet that holds a key ring.
I don’t use trekking poles, but the pack has a trekking pole system with an elastic bungee loop and a bottom webbing/ice ax loop, making them easy to carry when not in use.
Display
This backpack is excellent as a day hiking pack due to its lightweight design, breathability, and secure fit. The pack has small hip wings, not a full hip belt, keeping it secure with a wide elastic strap that loops around the front of your waist to keep it close to your body.
If I would change one thing about this pack, it would be to add a pocket on the shoulder strap where I could stash my phone for taking pictures, or it would have an easier way to add accessory pockets.
Comparable Daypack
recommendation
The Gregory Aerio 24 daypack is a versatile option that offers excellent comfort, airflow, stability, and storage solutions without compromising style or performance. Its mesh back panel system, CloudControl hipbelt, and thoughtful features like hydration compatibility, trekking pole attachment, and secure pockets make it a reliable companion for day hikes and daily errands. For anyone wanting a streamlined, efficient daypack capable of supporting dynamic speeds on the trail, the Aerio 24 remains a good choice.
Disclosure: Gregory donated a pack for review.
SectionHiker never accepts payment for gear reviews or editorial coverage. When you purchase through affiliate links on our site, we may earn a small commission at no extra cost to you. Help us continue testing and writing non-sponsored and independent gear reviews, hiking and backpacking FAQs, and free hiking guides.
