750ml Hydriam Collapsible Flask by CNOC Outdoors

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Size: 42mm Thread
Color: Blue


Ships in 1-2 business days | Based in Portland, OR | Est. 2017

Soft, collapsible, reusable drinking flask.

Perfect for storing water in running vests or for a simple way to carry a flask of whiskey up the mountain, the Hydriam is a versatile and lightweight way to carry whatever liquid you need it to.

The Hydriam comes in different volume sizes, allowing you to fully customize your set up to your needs. All sizes feature a tapered design that allows them to easily slide into the pocket of a running vest. The back includes markings for measuring out liquids while cooking or mixing your favorite camp cocktail.

Using the same universal 28mm or 42mm thread as the Vecto, the Hydriam is compatible with many filters (see specs), allowing for filtering on the go during long runs or fastpacking trips.


  • Rolls up small when empty
  • CNOC's lightest water carrying container
  • Tapered design to easily fit in running vest pockets
  • Tethered cap
  • Robust and durable, utilizing the same material as the Vecto
  • FDA approved and BPA, BPS, and BPF free


      • Capacity: 750ml | 25oz
      • Dimensions: 11" x 4" | 28 x 10 cm
      • Packed size: 4" x 1.5" x 1.5" | 10 x 4 x 4 cm
      • Operational temperatures: 20°F (-6°C) to 120°F (49°C)
      • Thickness: 0.03mm

      28mm vs. 42mm: wondering which one is right for you?

      Choose the 28mm if you use filters with a 28mm thread, such as the:

      Choose the 42mm if you use filters with a 42mm thread, such as the:


      • 28mm: 1oz | 28g
      • 42mm: 1.25oz | 36g


        • Flask: FDA approved TPU (BPA, BPF and BPS free)
        • Cap: Polypropylene

            Please note: TPU is a porous material and so is not completely smell free after production, please clean and air prior to use. 

            Made in China

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