Ultralight taste-free, minimalist reservoir with high flow rate.


The original Platypus® water reservoir that became a backcountry classic, the Hoser™ is an ultralight, minimalist hydration system that delivers taste-free hydration with a versatile, durable design that makes it great for backpacking, thru-hiking, and day hikes. Updates 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.

Hoser™ Hydration System

    • 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.
  • Size: 1 liter 2 liter
    Color: N/A N/A
    Capacity (Standard): 34 fl. oz 70 fl. oz
    Capacity (Metric): 1.0 liters 2.0 liters
    Weight (Standard): 3.2 oz 3.6 oz
    Weight (Metric): 0.09 kg 0.10 kg
    Width (Standard): 5.2 in 6.0 in
    Width (Metric): 13.5 cm 15.0 cm
    Length (Standard): 11.5 in 16 in
    Length (Metric): 29 cm 40.5 cm
    Height (Standard): 0 in 0 in
    Film: Polyurethane / Polyethylene Polyurethane / Polyethylene
    Spout material: Polyethylene Polyethylene
    Bite valve material: Silicone Silicone
    Country of Origin: Made in the U.S.A. of U.S. and Imported Materials Made in the U.S.A. of U.S. and Imported Materials