Platypus Hoser 1L Hands-Free Hydration System with Fast Flow Valve | Ultralight Water Reservoir

Ultralight, taste-free hydration you can trust

Meet the Platypus Hoser Hands-Free Hydration System Reservoir—the backcountry classic that keeps water intake simple and light. The 1.0-liter model offers a compact silhouette for backpacking, thru-hiking, or a quick day hike, while delivering dependable flow when you need it most.

What makes it stand out

• Ultralight, minimalist reservoir designed for hydration on the move.
• Self-sealing HyFLO bite valve delivers up to 30% higher flow than standard designs.
• Hang/carry loop and a versatile outlet compatible with all threaded Platypus drink tubes and caps.
• Taste-free, BPA-free, BPS-free, and phthalate-free with embedded silver-ion protection against mold and bacteria.
• 1.0-liter capacity with a compact footprint: 5.25 x 11.5 inches, ~3.2 oz; manufacturer’s limited lifetime warranty; made in the USA.

Real-world use cases

• On steep climbs, hydrate quickly without stopping to fumble with parts.
• During breaks, sip steadily and keep your rhythm on the trail.
• In varied environments, enjoy water without lingering flavors or extra gear clutter.

Choose with or without the Fast Flow Valve to optimize your setup. The outlet accepts any threaded Platypus drink tube or closure cap, making it easy to integrate with existing gear. Built for rugged outdoor use, the Hoser remains taste-free across temperatures and activity levels, while the embedded silver-ion helps maintain freshness in challenging backcountry conditions.

Sizes and specs at a glance

• Capacity options: 1.0 L (primary) and larger sizes
• Dimensions (1.0 L): 5.25 x 11.5 inches
• Weight (1.0 L): ~3.2 oz
• Materials: taste-free, BPA-free, BPS-free, phthalate-free with embedded silver-ion
• Origin and warranty: made in the USA; manufacturer’s limited lifetime warranty