roduct shot of a Katadyn BeFree water filter flask featuring HydraPak’s flexible, collapsible soft flask design against a scenic backcountry lake.

Katadyn X HydraPak

Founded in Switzerland in 1928, Katadyn is a global leader in water treatment and purification solutions for outdoor recreation, emergency preparedness, humanitarian aid and expedition use. For nearly a century, the brand has been dedicated to making safe drinking water accessible anywhere in the world through innovative filtration, purification and desalination technologies. Trusted by adventurers, military personnel, relief organizations and outdoor enthusiasts alike, Katadyn is recognized for its commitment to reliability, safety and enabling self-sufficiency in the outdoors.

Close-up of the Katadyn BeFree filter system featuring a flexible, collapsible HydraPak soft flask filled with fresh water.

Katadyn Water Filters Meet HydraPak Flexible Hydration

For over 10 years, Katadyn and HydraPak have brought together two specific areas of expertise: water filtration and flexible hydration. The partnership pairs Katadyn’s filtration technology with HydraPak’s lightweight, collapsible containers, creating systems that let users collect, filter, carry and drink water without relying on rigid bottles or separate filtration setups.

Close-up of a user opening a Katadyn BeFree filter system featuring HydraPak's soft, collapsible flask body to treat water outdoors.

Flexible Hydration Behind the Katadyn BeFree Water Filter

Products like the Katadyn BeFree demonstrate that integration directly, combining Katadyn’s EZ-Clean Membrane™ filter with a HydraPak-made flexible flask. The flask collapses as it empties, packs down when not in use and uses a wide opening for collecting water, while the filter allows users to drink directly from the container. The partnership also extends to higher-capacity systems like the Katadyn Gravity BeFree 3.0L, which uses an ultra-durable HydraPak 3L reservoir with a wide-mouth opening, integrated carry handle and collapsible construction, paired with Katadyn filtration that delivers up to 2 liters of filtered water per minute. By designing the flexible hydration vessel, whether it’s a reservoir or flask, to function as one system, Katadyn and HydraPak have helped make backcountry water treatment lighter, more packable and easier to use on the move.

Close-up of a hiker holding a tactical tan Katadyn BeFree water filter flask by its cap handle while walking through a forest.
A lineup of Katadyn BeFree water filters featuring HydraPak’s flexible, collapsible flask design displayed in water splashes near a river.
A hiker using the Katadyn BeFree filtration system with HydraPak's flexible, squeezable soft flask to filter water directly from a mountain stream.

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