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Shop Rock + Run Brand. Drawing on our decades of climbing, running, training and general experience in the mountains, we continue to develop and expand this collection of core products directly made by Rock + Run or sourced and branded by Rock + Run. 


Platypus Hoser 2L

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The Platypus Hoser 2L is an ultralight, taste-free, minimalist reservoir with a high flow rate that has become a backcountry classic.  

With a versatile, durable design that makes it great for backpacking, thru-hiking, and day hikes, the Platypus Hoser 2L has had a few recent updates which include a new self-sealing HyFLO™ bite valve that delivers a 30% increase in flow rate, making it quicker and easier to hydrate on the go.


  • Drink on the go: New simple, one-piece, self-sealing HyFLO bite valve makes it quicker and easier than ever to hydrate hands-free with a 30% increased flow rate.
  • Easily transportable: Integrated hang/carry loop makes it easy to secure the reservoir in a backpack or elsewhere.
  • Pure Platy experience: All materials are certified taste-free, BPA-free, BPS-free, and phthalate-free.
  • Funk-free: Embedded silver-ion protects reservoir from mold and bacteria.
  • Versatile: Threaded port and 1/4" diameter drink tube make it easily compatible with accessory caps and adaptors.


  • Capacity (Standard): 70 fl. oz 
  • Capacity (Metric): 2.0 liters 
  • Weight (Standard): 3.6 oz 
  • Weight (Metric): 0.10 kg 
  • Width (Standard): 6.0 in
  • Width (Metric): 15.0 cm
  • Length (Standard): 16 in
  • Length (Metric): 40.5 cm
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      5.0 Based on 1 reviews
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        Miss j.
        United Kingdom United Kingdom
        Fantastic product

        I used this for a hike in Peru and it served its purpose perfectly, well made, ease of use, no leaks or drips.. Would recommend