Gregory Arrio 24L Day Hiking Backpack | Ventilated Backpanel & Hydration Attachment

The Gregory Arrio 24L is a versatile daypack built for warm-weather hikes and quick day trips. Its compact silhouette carries your essentials with comfort and clarity, so you can focus on the trail ahead rather than fiddling with straps. Thoughtful organization and breathable materials make it easy to stay balanced, organized, and ready for changing conditions on the mountain or in the city.

Cooling comfort where it matters

The FreeSpan suspended open-air mesh backpanel delivers cooling air flow as you climb, helping sweat dry faster so you stay comfortable on longer ascents. Perforated, breathable shoulder straps help keep you light on your feet, while the integrated sternum strap includes a safety whistle for quick signaling if needed. This design promotes ventilation without adding bulk, so you can move with confidence on hot days.

• Open-air backpanel enhances cooling during climbs
• Breathable shoulder harness with integrated hydration routing
• Reflective attachment loops improve visibility on low-light paths

Hydration is built into the system for seamless sipping as you go. An internal hydration sleeve with a SpeedClip hydration hanger accommodates compatible reservoirs, so you can stay hydrated without breaking your rhythm. Note that the reservoir itself is not included.

• Internal sleeve with SpeedClip hanger for hands-free hydration
• Hydration routing integrated into the harness for easy sipping
• Reservoir not included; compatible with Gregory QuickDry 3D options

Smart organization for day trips

Every pocket is designed for quick access and reliable security. A front buckle closure with reflective loops keeps gear secure and visible on dim trails, while multiple stash pockets provide fast access to a map, keys, or a light layer. The top zipped pocket and front vertical zippered pocket offer designated spaces for smaller items or electronics. A side stretch mesh pocket and a side zip stash pocket add flexible storage for snacks, snacks, or camera gear as needed. The removable webbing hipbelt lets you tailor the fit for different carries and comfort levels during longer days on the trail.

• Front buckle closure with reflective loops for safety
• Top zippered pocket and front vertical zippered stash pocket
• Side stretch mesh pocket and side zip stash pocket for quick access
• Removable hipbelt enables adaptable carry comfort

Real-world versatility

Whether you’re chasing alpine light, scouting a new route, or grabbing quick access to a camera during a scenic overlook, the Arrio 24L helps you stay organized without slowing you down. It’s designed to adapt to changing conditions, from sunny summits to breezy ridgelines, while keeping essentials within reach. Reservoir compatibility is noted, and you can pair the system with compatible Gregory hydration gear to suit your training or weekend adventures.

With its ventilated backpanel, thoughtful pocketing, and comfortable load options, the Arrio 24L is ready for a wide range of day hikes and outdoor explorations without promising guaranteed results—only the possibility of a smoother, more comfortable carry on warm days.