Osprey Seral 4L Biking Waist Pack with Hydraulics Reservoir, Claret Red

Look no further than the Seral 4 if you're a rider in search of a low-profile lumbar pack with integrated hydration. This slim waistpack comes with a 1.5-liter bladder featuring our updated high-strength magnetic coupling for improved hose management, even in rough terrain. The Seral 4 boasts ample storage capacity for ride essentials like a spare tube, CO2, multi-tool, and, of course, snacks. Our bike-specific, angled hipbelt and compression straps ensure stability and comfort by keeping the pack close to your body.

Constructed with PFC-free recycled bluesign®-approved nylon, the Seral 4 is built to be sustainable, tough, and durable enough to endure years of riding. The airmesh wrap hipbelt provides stability and breathability, while the ErgoPull waist strap closure system allows for a proper, snug, and stable fit. The AirScape backpanel with contouring lumbar wrap offers maximum stability, and the extra thick ridged foam with a center air channel ensures excellent ventilation.

Designed for riders who require hydration or gear storage while riding but prefer the off-the-back carry and minimalism provided by lumbar packs, the Seral 4 is the perfect choice. The dedicated hydration compartment stores the included 1.5 L lumbar reservoir and compresses for stable carry, while the hose magnet attaches to the bite valve for easy access while riding. Additionally, the main compartment features tool organization and internal zippered pockets, providing a total volume of 4L.

With its comfortable, secure, and stable carry, the Seral 4 is the ideal lumbar pack for cyclists in need of hydration and gear storage while on the go.

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