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Osprey Seral Hydration Pack
Osprey Seral Hydration Pack

Osprey Seral Hydration Pack

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Durable, off-roading stability.

There are a lot of luxuries we can go without on a mountain bike ride, but water isn't one of them. The Osprey Seral Hydration Pack is an off-the-back hydration pack designed to carry an included with a 1.5-liter lumbar reservoir.

With a magnetic bite valve that attaches to the hip belt, nourishing water is always within reach. Compression straps pull the pack towards your lower back and wrap around your hips for supreme stability. Even over difficult terrain, we ensure this lumbar pack won't creep around while you ride. A zippered main compartment is big enough for a spare tube, patch kit, mini pump, tire lever, multi-tool, and anything else you might need.

Your next adventure is calling, so prepare for excellence with a hydration pack that can go the distance with you.


  • Include a 1.5L lumbar reservoir with magnetic bite valve for easy access to water at any time
  • Bike-specific angled hipbelt and compression straps for maximum comfort and stability
  • Extra thick backpanel ridged foam with center air channel for great ventilation
  • Airmesh wrap hipbelt with zippered fabric pockets provide breathability
  • ErgoPull waist strap closure system allows for proper snug and stable fit
  • Access water bottles with ease with specialty-made bottle pockets
  • Off-the-back minimalism for the ultimate hydrating experience

  • 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.

    Bag Type: Waist 

    Ordered by Most Relevant First
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    1 stars
    Reviewed 7/8/2019
    by StanF
    Las Vegas, NV
    Overall Rating
    Bladder no Bueno

    This a very well made waist pack as youd expect from Osprey. My problem is the bladder. Its extremely difficult to fill without making a mess. The whole top of the bladder opens with a terribly designed clip that goes over the mouth of the bladder with it folded over. The bladder itself is partitioned at several points making it difficult to clean and rinse out. I wish I would have gotten the model that just held two water bottles.

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    *Orders received before 3:00PM Pacific time are shipped the same day (Mon-Sat). Orders over $50 are shipped free (USA only, excluding AK and HI). Some exceptions apply. See Shipping for details. 74