Hydrapak Flux 1L Bottle

A litre that only takes up space when it's full. That is the only real argument for a soft flask, and it's enough.

The wall

Thermoplastic polyurethane in a double-layer laminated film, with POM and silicone for the hard parts. The second layer provides the elasticity and resistance that a single wall lacks—it is what allows the bottle to be rolled up without puncturing it.

Empty, it flattens and rolls up into a side pocket.

The nozzle stays clean

A polyoxymethylene dust cap with silicone seals covers the nozzle. It prevents leaks in the bag and keeps dirt away from the part that goes in your mouth—which matters when the flask is traveling at the bottom of a piece of luggage.

Transport

Bail handle: carry it by hand, by a finger, or clipped to a shoulder strap with a carabiner.

The 1-litre size

This is the intermediate capacity in the Flux range. The 750 ml fits in a waist belt pocket, the 1.5 L covers a long outing; the litre is effortless to carry and enough for half a day.

Capacity 1,000 ml. The Flux+ 1.5L in the catalog adds an integrated filter.