PX Vest (3.1L)

$149.00Free Shipping

In stock

The Instinct PX 3.1L Hydration running vest frees you to race and run minimally without sacrificing comfort. Efficient storage options surround the front and back to allow for the option extra 600ml soft flasks, a phone, gels, light jacket, and other small accessories.

You can easily personalize the fit thanks to the adjustable sternum and side straps, which eliminate unwanted bouncing. The lightweight PX Vest is made with small and large patterned mesh in order to allow for maximum airflow while quickly removing sweat.


  • Dual adjustable sternum straps to customize the fit
  • Adjustable side straps secure the pack load to prevent bouncing
  • 4 front holster pockets for flasks, a phone, gels, headlamp, or other accessories
  • Left shoulder pocket with an emergency whistle and key clip
  • Upper back mesh pocket for a light jacket
  • Lower back pocket for a headlamp, gloves, or medical kit
  • Trekking pole holders on the front
  • Breathable mesh fabric breathes to keep you cool and remove sweat
  • Weight without flasks: 160g


  • Dual front flask holsters: 8cm W x 17cm H
  • Front lower holster pockets: 13cm W x 15cm H
  • Upper back pocket: 15cm W x 11cm H
  • Lower back pocket: 30cm W x 9cm H
  • Total volume: 3.1L


  • Nylon and polyester