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Montane Men's Via Fang 5 Hydration Running Vest

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A sleek, lightweight option for trail running or ultra racing, the Montane Men's Via Fang 5 vest pack offers movement-mirroring fit, intuitive in-reach pocketing, and included 500ml soft flasks.


A sleek, lightweight option for trail running or ultra racing, the Montane Men's Via Fang 5 vest pack offers movement-mirroring fit, intuitive in-reach pocketing, and included 500ml soft flasks.

The pack is constructed of high-tenacity nylon/robic fabric and breathable air mesh, resulting in a close-hugging fit, an excellent strength-to-weight ratio, and breathability to help keep you cool and comfortable. It has even been given a Polygiene treatment to offer long-term odor-resistance. The ergonomic shaping of the pack's harness combines with an adjustable lower stretch closure and an adjustable sternum strap to keep the pack comfortably and securely in place.

A large main storage compartment has expandability for discarded layers and other gear. An external bungee system allows you to compress the compartment to keep things securely in place or to simply diminish the size of the compartment when you aren't maxing out its full 5 liter storage capacity. There are tons of other pockets too, including upper and lower front harness pockets, and stretch side lat pockets. Two front stretch pockets house the included 500ml soft flasks so on-the-go hydration is close at hand.

Other features include multiple trekking pole carrying configurations, compatibility for use of a hydration system (hydration system not included), and an integrated, removable safety whistle.

The Montane Men's Via Fang 5 hydration running vest is available in your choice of colors and Small/Medium (best fits 30"-38" chest sizes) and Medium/Large (38"-44") size options.

  • Main body is constructed from RAPTOR UL fabric, which has an improved strength to weight ratio through the use of Robic filaments
  • MONTANE Freelight Chassis constructed from lightweight CONTACT Flyte Mesh that is fast drying and highly breathable
  • Bound seams on the chassis give stronger, soft touch neater edges
  • Technically tailored ergonomic Freelight Chassis vest designed for body-hugging load carrying comfort during movement over long distances
  • Front stretch hook and loop lower body adjustment enables chassis to grip the body while running and allow for unrestricted breathing during exertion
  • Chassis elastication also allows the user’s rib cage to expand freely for unrestricted breathing during exertion
  • Low profile sternum stretch adjustment with adjustable hook and multiple attachment points
  • Includes 2 Montane SoftFlasks 500ml for fast, compressible hydration
  • Right and left top elastic loops for compatible Montane SoftFlask Straw accessory (sold separately)
  • Internal hydration reservoir attachment point in vertical compartment with attachment points for tube on chassis
  • Two upper stretch mesh storage pockets on chassis; right hand pocket with security zip
  • Two lower Montane SoftFlask compatible pockets on chassis; left hand pocket with security zip
  • Two additional stretch mesh storage pockets on either side of the chassis
  • Zipped lower compartment ideal for keeping weight centralized while on the move
  • Pacer pole attachment point that is easy to access while on the move
  • YKK reverse coil MONTANE semi-auto zips that lock shut and are rustle free
  • Zip garages throughout help prevent weather ingress
  • Removable whistle accessory for mountain and race safety
  • External bungee provides main pack body compression and additional storage with low profile 'penny cordlock' adjustment
  • Top lightweight hang loop
  • 360° ‘DUSK TILL DAWN’ head torch reflectivity
California residents: view proposition 65  Warning

Technical Specs

Best Use
Hiking, Running/Fitness
Panel Loading
Detachable Daypack
Fits Torso
Small/Medium: 30"-38" chest measurement
Medium/Large: 38"-44" chest measurement
Hydration Compatible
Yes; 2 500ml soft flasks included
Sternum Strap
Yes; Adjustable
Torso Adjustment
5 liters
Limited Lifetime
Hydration Running Vest
Raptor UL robic and Contact Flyte Air Mesh
Item Weight
10 oz

1 Reviews

5 / 5


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The MOST Comfortable and functional hydration vest


Superior ergonomics- Montane Via series vests is far better than all the others I’ve tried. Zero hot spots. Zero pressure on sternum or ribs with full load. Wide range of adjustments from big elastic straps. It even has both over the shoulder and under arm outlets for drinking tube! Great for those who dislike the feeling of a drinking tube flopping around the shoulder. Buttonless storage for a 5L pack- phone, headlamp, smart watch, windbreaker, there is a pocket for all of the above plus a 2L water reservoir. On my first run I thought I accidentally grabbed my other Montane Via, which was a 15L one!


Runs warm - being a longer pack, and wraps around like a shirt, it does run a bit warm, despite the highly breathable materials. Asymmetrical Front Pockets limit ones soft flask and bottles options - Strangely one is zipped and one is not. The included 17oz fit both pockets ok, not bouncing around, but if you want to use longer Salomon styled soft flasks, or add long straws to them, then you’re out of luck. Stick to reservoirs.