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Osprey Seral w/ 1.5L Resevior

  • Product Number: 3662 - 0105065OFAMR

If your preference is for an off-the-back hydration solution instead of an over-the-shoulder pack, the Seral lumbar pack is for you. There are a lot of luxuries we can go without on a mountain bike ride, but water isn’t one of them. The Seral lumbar pack is designed to carry an included 1.5-liter lumbar reservoir with a magnetic bite valve that attaches to the hipbelt for easy access while you pedal. Compression straps pull the pack into your lower back and wrap around your hips for supreme stability, even over technical terrain. Some lumbar packs have a tendency to creep around while you ride—we promise this one won’t. A zippered main compartment is big enough for a spare tube, patch kit, mini pump, tire lever, and multi-tool, while hipbelt pockets can store your keys, sunscreen, phone, and trail snacks.


  • AirScape back panel with contouring lumbar wrap provides maximum stability
  • Included Osprey Hydraulics® 1.5L lumbar reservoir by Hydrapak
  • Magnetic hipbelt bite valve attachment
  • Easily accessible zippered main compartment with internal tool organization
  • Dual zippered hipbelt pockets
  • Blinker light attachment


Weight: 0.82 LBS.
Volume: 427 IN3 / 7 L
Dimensions: 7.9H X 13.0W X 5.9D IN.
Fabric: 900x600D Polyester
Accent Fabric: 210D Nylon Duramax
Bottom Fabric: 420HD Nylon Oxford

Ideal For:

Camping, Biking