Osprey SERAL 7 Postal Blue lumbar bag

Osprey Seral 7 Lumbar Pack – High-performance hydration and total freedom for mountain biking

Designed for cyclists and mountain bikers looking for minimalism and performance, the SERAL 7 from Osprey is a compact 7-litre hydration waist pack, ideal for technical mountain biking or short to medium-distance rides. It frees your shoulders while ensuring excellent stability thanks to its ergonomic design, which is designed for movement.

1.5 L Hydraulics™ reservoir included

The Seral 7 waist pack features a 1.5-liter Osprey Hydraulics™ LT lumbar reservoir that is easy to fill and clean. Thanks to a magnetic attachment system on the waist belt, the mouthpiece stays within easy reach, even on descents.

Optimized stability and comfort

Thanks to its ribbed foam AirScape™ back panel and ergonomic ventilated mesh waistbelt, the Seral 7 fits snugly around the lower back. Side compression straps ensure a precise fit and excellent support, even on the most demanding terrain.

Smart organization

• Large zipped main compartment for storing your gear
• Front pocket with tool organizer
• Two zippered waist pockets for quick access to your essentials (snacks, multi-tools, inner tube, etc.)
• Bike light attachment + reflective details for added safety

Eco-friendly design

The Seral 7 is made from 100% GRS-certified recycled materials, with a PFAS-free water-repellent finish and a BPA-free reservoir. Sustainable manufacturing without compromising on performance.

Who is it for?

The SERAL 7 Osprey is designed for demanding cyclists and mountain bikers who want to travel light while carrying the essentials: hydration, tools, nutrition. It's an ideal solution for those who want to keep their shoulders free while ensuring a stable and comfortable fit at the waist.

Technical features:

• Capacity: 7 liters
• Reservoir: Hydraulics™ LT 1.5L included
• Back panel: AirScape™ ribbed foam + ventilation channel
• Waistbelt: ventilated mesh + ErgoPull closure + zippered pockets
• Magnetic valve attachment on the waistbelt
• Approximate weight: 0.5 kg

Why choose the Osprey Seral 7 bag?

Because it combines practical hydration, lumbar comfort, and smart organization in a design that is both durable and eco-friendly. The Seral 7 is a benchmark for mountain bikers who want freedom of movement and performance.