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Dustmoss Green
Dustmoss Green
Claret Red
Osprey Seral 4 Lumbar Hydration Pack
Osprey Seral 4 Lumbar Hydration Pack
Osprey Seral 4 Lumbar Hydration Pack

Osprey Seral 4 Lumbar Hydration Pack

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Comfortable, Secure, And Stable Hydration For Your Next Adventure

It's vitally important to refuel while on the trail. No matter how many water bottles you bring along with you on the ride, nothing is more convenient than a small pack fitted with 1.5 liters of crystal clear water. Riders looking for a low-profile lumbar pack with integrated hydration need to look no further than the Osprey Seral 4 Lumbar Hydration Pack.

This slim waist pack features a 1.5-liter bladder with an updated high-strength magnetic coupling for improved hose management even in rough terrain. The Seral 4 has enough storage capacity for ride essentials, such as a spare tube, CO2 and multi-tool, and, of course, snacks. Constructed with high-quality bluesign®-approved recycled high-tenacity nylon with a PFC-free DWR coating.

Make the most of your rides thanks to top-notch hydration that will keep you riding at tip-top shape. The Osprey Seral 4 Lumbar Hydration Pack delivers high-quality ride stability thanks to the bike-specific, angled hip belt and compression straps that provide comfort while on the bike. Skilled craftsmanship meets an environmentally friendly touch, allowing for eco-friendly materials and a sustainable build that is tough and durable to endure years of riding.


  • AirScape back panel with contouring lumbar wrap provides maximum stability
  • Included Osprey Hydraulics® 1.5 L lumbar reservoir by Hydrapak
  • Magnetic hipbelt bite valve attachment
  • Large zippered main compartment with reservoir sleeve
  • Main compartment tool organization and internal zippered pocket
  • Blinker light attachment with reflective graphic

  • B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.


    Mfg PartNum: 10002949 

    Claret Red

    Mfg PartNum: 10003210 

    Dustmoss Green

    Mfg PartNum: 10003211 

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