Viper 13

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13L backpack with 2.5L hydration bag. Comfortable, stable and cool backpack with all the adaptations for cycling. Perfect for BTT.


  • Backpack with hydration system included. Indicated for activities that require the transport and use of a hydration system.
  • Specific for BTT although it can also be adapted for running or excursions.


  • Back designed to maintain ventilation and total stability . With foam AirScape HDPE panel with integrated ventilation points as well as a stitched and glued mesh to the back providing stability and ventilation.
  • Shoulder pads with a mesh that completely covers them and several hollow points of ventilation. Designed not to disturb the neck.
  • Lumbar belt with ErgoPull ™ adjustment system allows the two arms of the lumbar belt to be adjusted at the same time, avoiding offset during the process. In addition you can pick up the 20mm lumbar straps.
  • Backpack made to last a lifetime, that's why Osprey offers a 30-year warranty.

Pockets and adaptations:

  • 2.5 liter hydration system with removable tube. With a specific large opening zippered pocket. The zipper goes from the middle of a shoulder pad to the top of the opposite. Fixation of the hydration nozzle to the magnetic shoulder strap, being very comfortable and reliable to use.
  • Top zip pocket perfect for mobile or mp3.
  • Large opening main pocket with an inner mesh compartment.
  • Open gusset outer compartment, adjustable by clips.
  • Front pocket with two compartments and key clip.
  • Side mesh compartments for drums.
  • Reflective front tape to place rear light. The front designs are also reflective.
  • Helmet holder with front Lid Lock system. Adjustable rubber with a stop, inside you can place the helmet carrying it in the upper-middle part of the backpack.
More Information
Season of useAutumn, Spring, Summer
Ecological note (0 to 5)1 🌱
Ecological CertificatesEOCA
Volume (l)13
Dimensions (cm)45x23x18
Size guidePack Sizer
Weight (gr.)580
Hydration SystemsCompatible and Incorporates
RaincoverDoes not incorporate
Gear looplight holder
Made inAsia
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