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X 10L

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The ultimate ULTRA distance racing-training vest.

The NEW standard in extreme function, accessibility, and ergonomics.
The X offers aspiring trail runners & elites the most intelligent storage, function and versatility available. Discover phenomenal stability & comfort in any situation.

  • Volume: 10L
  • Weight: 297g 
  • One Size - fully adjustable
Price variation with or without 2 x Instinct Hydra Cell (600ml) softflasks
    Select Size
    Select Type: X 10L
    Availability: Translation missing: en.general.icons.icon_check_circle icon Only 6 left!
    Current Batch BBE:

    The X achieves increased storage capacity while remaining ultra-compact, breathable, and with minimal body contact.

    Its unique design follows one of Instinct’s main goals; to access with the greatest ease, all essentials without ever removing your vest while running. High sitting, the X offers remarkable comfort, stability, and liberty of movement. Whether it be water bladder, bottles, or soft flasks, the choice is yours. Optimal positioning of pockets & adjustments allows for natural, effortless & intuitive access. Its shoulder straps offer unique storage for all/any possible feed, hydration, and storage desired. Securely and immediately store your smartphone in one of two extra-large zipped pockets.

    Lightweight & breathable honeycomb mesh ensures ventilation and sweat dissipation without sacrificing strength or reliability. Adjustable front sternum straps and our unique refined side elastic lacing system allow for a custom fit to almost any body type.

    Discover stability, liberty of movement and unconstrained breathing.


    • 2 x 650ml hydration pockets + elastic compression cords with auto lock. High sitting for immediate & effortless access.
    • 2 x 600ml feed storage pockets.
    • 2 XL zippered pockets for easy access storage of smartphone or important objects.
    • 1 x 150ml zipped shoulder pocket + non-stretch internal cord ring + whistle. For safety essentials and more


    • 1 x 800ml top horizontal pocket + elastic compression cord with auto lock. Easily access your rain gear right from the first drop without removing bag!
    • 2 x bottom horizontal pockets. Central access to safety kit, headlamp(s), gloves, arm warmers …. and more
    • 1 x side access pocket for quick storage of gloves, rain pants, headlamp or rain vest.
    • 1 vertical top access pocket with closing buckle + velcro strap. 2L water bladder compatible.
    • 1 main 4 liter “U-shaped” zippered pocket compartiment for large & quick storage in any situation.


    • 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!
    • 3 elastic compression cords with auto lock for top and bottom back pockets.


    • Front : vertically right & left

    X Front


    • Back : horizontally or vertically.

    X Back

    Delivery / Returns FREE UK Delivery orders over £30,00, Next Day Service + FREE UK Returns

    Shipping Information - Details

    UK Standard Delivery - This means that your goods will be processed as normal and shipped by Royal Mail 48. Ordered goods will usually arrive within 3 - 5 working days for most of the UK mainland. Baskets with a total value (before vouchers and promotional codes are applied) of £30.00 and over will qualify for FREE UK delivery.

    UK FREE Delivery - to all of the UK on almost every product, as long as your total basket value is greater than £30.00 (delivery charges are applied to baskets with a total value of less than £30.00). - All FREE Delivery order will be sent via (UK) STANDARD SHIPPING (Royal Mail 48)

    Need it Quicker? - Select DPD Next Working Day or Fast Delivery at checkout - Orders will be processed as normal and shipped by either DPD for Next Working Day service (excluding weekends) or the Royal Mail Tracked 24 service, ordered goods will usually arrive within (1 - 2 working days)

    RETURNS & REFUNDS - Details

    Return this item for free - If you change your mind on your purchase, you have a 30 days to return it for a refund or replacement subject to terms. All goods must be in new and unused condition and in their original packaging with all labels still attached

    About Instinct

    Born on the trails of the French Alps and race approved around the world.

    Redefining a hydration pack comes from asking the right questions... introducing analytical observations & first hand experience in running the toughest conditions. At the heart of each revolutionary Instinct product is the desire to achieve a greater degree of function, accessibility and ergonomics; Total liberty of movement, zero obstruction and a second skin fit.