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Osprey Packs
Seral 4L Hydration Pack

5 out of 5 stars
1 Review
Current price: $50.97 - $63.71 Original price: $84.95
Up to 40% off



Why We Like The Seral 4L Hydration Pack

Whether we are out for a foothill bike ride, quick afternoon hike, or are just swinging the dog around the block we strap-on the Seral 4 Hydration Pack. This pack keeps water nearby at an arms reach so we can stay hydrated.


  • Low profile hipbelt built to keep you hydrated on the move
  • Breathable backpanel locks in a secure and reliable fit while moving
  • 1.5L reservoir keeps you hydrated while you hike, run, or bike
  • Durable material holds up against rugged treks
  • Water-resistant finish fends off light precipitation
  • Zippered main compartment lets you bring just the essentials
  • Magnetic hipbelt bite valve attachment keeps your water nearby
  • Item #OSPZ1A7
Responsible Collection
Bluesign Approved, Recycled/Repurposed
[face fabric] 600D recycled polyester, DWR finish, [accent, bottom] recycled 400D nylon, DWR finish
4L (244cu in)
Hydration Compatible
Reservoir Included
1.5L Hydraulics Lumbar Reservoir
top zip
1 internal zippered
7.5 x 12.5 x 4.5in
Claimed Weight
Manufacturer Warranty

Overall Rating

5 based on 1 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 0 reviews
4 Stars - 0 reviews
5 Stars - 1 reviews

Fits True To Size

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What do you think about this product?


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5 out of 5 stars

January 31, 2024

Great minimalist hip pack

I've used it several times

Osprey makes great packs! This hip pack works great if don’t carry all your tools and stuff on a ride. Great for the minimalist!

jacques G

Originally reviewed on Backcountry.com