instinct trail running available from Fast and Light


From 90 CHF to 120 CHF

AMBITION: THE new standard in reaching Ultra distances.
Minimalist, refined & optimized.

Audacious, perfectly balanced, AMBITION offers extraordinary freedom of movement & accessibility.
Racy & performance oriented, it will support you in any race or training run from 10 to 70km.

Trail enthusiasts & elite Ultra runners; a new trail starts here!

  • Volume: 4.5L
  • Weight: 190g
  • One Size

[ Price Variation : with or without soft flask ]

With 2 Soft Flasks
Add 2x 600ml HyrdaPak Soft Flasks

Only 1 left in stock


The coolest & lightest way to run from 10 to 70km.

  • Minimalist, refined & performance oriented, AMBITION is the coolest & lightest way to go further.
  • Compact and extremely versatile, it offers clever storage, extreme function and a fit so natural that it’s forgotten.

High sitting, the AMBITION allows immediate & easy access to hydration, feed, poles & adjustments.

Adjustable front sternum straps and our unique elastic side lacing system allow for a custom fit to almost any body type.
Discover stability, liberty of movement, immediate access to storage and unconstrained breathing.

Optimal positioning of pockets & adjustments for natural, effortless & intuitive access.
Lightweight & breathable honeycomb mesh ensures ventilation and sweat dissipation without sacrificing strength or reliability.

AMBITION easily carries :

  • 2 x 650ml of hydration
  • Feed
  • Rain jacket
  • Rain pants
  • Long Sleeve
  • Safety Kit
  • Phone
  • Headlamp(s)
  • Poles


  • 2x 650ml hydration pockets + elastic compression cords with auto lock.. Sits high for immediate and effortless access.
  • 2x 600ml feed storage pockets + internal elastic cord: extra large storage & easy access (right side: +1 hidden pocket // left side: +1 overlaying pocket).
  • 1x 100ml shoulder pocket, non-stretch internal cord ring + whistle + elastic loop for upper pole attachment. For safety essentials and more …


  • 1x 600ml top horizontal pocket + elastic compression cord with auto lock. Easily access your rain gear right from the first drop without removing bag!
  • 1x 600ml bottom horizontal pocket. Central access to safety kit, headlamp(s), gloves, arm warmers…
  • 1x 800ml vertical pocket + closing buckle. Perfect storage for rain pants, long sleeve t-shirt and even your poles.


  • 5 carrying options. Front: vertically right & left // Back: horizontally, vertically or diagonally. Directly in the dorsal vertical pocket.


  • 2 adjustable chest straps mounted on 20 cm sliders = custom fit vertically and horizontally.
  • 2 double “S” elastic cross-lacing with auto lock: “on the fly” side adjustment!
  • 1 elastic compression cord with auto lock for top back pocket.
InStinct contents AMBITION 4.5L 2020 US
InStinct Web Focus AMBITION back 1 2020 trail race vest Fast and Light CH 1
InStinct Ambition Dimensions trail race vest Fast and Light CH
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Shipping & Delivery
Swiss post logo

We ship with Swiss Post Economy, which usually arrives in 2 working days.

For larger packages such as skis we use DPD courier services.

Free postage in Switzerland is offered for all purchases over 100 CHF.