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Mountain Hardwear - Fluid 18 Pack

Availability: Out of stock

Stock #: 969E- Closeout

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The Fluid 18 is the perfect pack for technical outings where speed and stability are crucial. It features the OTF (On-The-Fly) compression system; you put the pack on, grab the two dangling straps and pull forward to provide what the company calls "body-mapped-compression," or in less technical terms, it scrunches the load closer to your back for better balance.

Feature list from Mountain Hardwear:

  • CoolWave Suspension with air channels and breathable spacer mesh backpanel and lumbar provides excellent load support and great ventilation
  • OTF (On-The-Fly) Compression lets user adjust load stability while wearing the pack without restricting motion
  • Large main compartment with internal security pocket
  • Front compression pocket with stretch mesh panels for overloads, helmet, etc.
  • Large zippered mesh pockets on padded, ventilated hipbelt keeps essentials handy
  • Dedicated zip access hydration sleeve with dual ports
  • Front panel organizer pocket with internal zip pocket keeps keys, wallet secure
  • Ventilated and soft edge shoulder straps are comfortable on bare skin
  • Super stretchy mesh side pockets offer quick storage/access for water bottles, hat/gloves, etc.
  • Carry loops for ice axes and trekking poles
  • Reflective hits for high visibility and safety




  • S/M 1100 cu. in. / 18 L
  • M/L 1220 cu. in. / 20 L


  • S/M 1 lb. 8 oz. / 680 g
  • M/L 1 lb. 10 oz. / 740 g

Torso Fit Range: 

  • S/M 16.0 in - 19.0 in / 41 cm - 48 cm
  • M/L 18.5 in - 22.0 in / 47 cm - 56 cm

Additional Information

Intended Use Hiking/Backpacking, Travel
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