1.5L/2L/2.5L/3L Hydration flask for Cycling Hiking Camping

Collapsible 500ml filtration flask with 42mm cap removes 99.99% of bacteria, fits most hydration vests, and includes backflush adapter for easy cleaning.

Stay safe and hydrated on the trail with this advanced collapsible filtration flask, designed for performance, portability, and protection.

✅ Fast & Reliable Filtration: The integrated 42mm filter cap removes 99.99% of E. coli and parasitic cysts, filtering up to 1,500 liters of fresh water at a flow rate of over 1 liter per minute.*

✅ Hydration Vest Compatible: Slim profile and soft flask design fit easily into most hydration vests, belts, or pack pockets. The flexible shoulder prevents chafing and ensures bounce-free comfort during high-movement activities.

✅ Collapsible & Space-Saving: Made from soft, durable material that shrinks as you drink—minimizing sloshing and saving space in your pack when empty.

✅ Includes Backflush Adapter: Comes with a simple backflushing adapter that connects to the filter for easy maintenance. Just thread it onto a clean bottle to restore optimal flow rate.

✅ Built for the Long Run: Crafted to endure rugged use with a long lifespan, and backed by a no-hassle replacement guarantee to keep your adventures uninterrupted.

Perfect for trail runners, hikers, bikepackers, and fastpackers who need ultralight, dependable water filtration on the go.