Hydration and Stability in a Technical Lumbar Pack

The Osprey Seral 7 is a high-performance waist pack designed specifically for mountain bikers who demand a low center of gravity and total freedom of movement. Unlike standard lumbar packs, the Seral 7 comes fully equipped with a 1.5-liter Hydraulics™ Lumbar Reservoir. The reservoir is uniquely shaped to sit low in the pack, ensuring the weight of the water remains centered and stable on your hips even during technical descents. The hydration hose features a magnetic attachment that secures to the hipbelt, making it easy to grab a drink and snap the valve back into place without looking.

With a 7-liter total capacity, the Seral 7 offers the largest storage volume in Osprey's lumbar series, making it the ideal choice for longer trail sessions. The AirScape™ backpanel uses extra-thick ridged foam and mesh to provide excellent ventilation and cushioning, preventing the pack from feeling "sweaty" during intense climbs. Inside, the dedicated tool organization keeps your pumps, tubes, and multi-tools secure and separate from your snacks and light layers. Built with bluesign® approved recycled high-tenacity nylon, this pack is as rugged as the trails it was designed to conquer.

Key Features:

• 1.5L Lumbar Reservoir Included: Specially designed hydration bladder that maintains a low-profile shape and centers water weight on the hips.
• Magnetic Hose Management: A powerful magnet on the bite valve and hipbelt ensures the hydration hose stays secure and accessible at all times.
• 7-Liter Volume: Provides substantial storage for a spare tube, CO2, multi-tool, nutrition, and a lightweight weather shell.
• AirScape™ Lumbar Pad: Contoured foam ridges provide a stable fit and allow for superior airflow to keep you cool.
• Large Zippered Hipbelt Pockets: Two oversized pockets provide "on-the-go" access to your phone, keys, or trail snacks.
• Compression Straps: Specialized straps pull the pack weight close to the small of your back to eliminate "bounce" in technical terrain.
• Internal Mesh Organization: Features internal dividers and a key clip to keep your gear organized and rattle-free while riding.