A female athlete standing on a rocky mountain expanse holding trekking poles, wearing a deuter hydration vest with two front soft flasks.

deuter X HydraPak

Founded in Germany in 1898, deuter is one of the world's leading backpack and outdoor gear brands, known for its commitment to quality, comfort and durability. With more than 125 years of experience, deuter designs packs, sleeping bags and outdoor equipment for hiking, trekking, mountaineering, biking and trail running, helping adventurers explore the outdoors with confidence. The brand is recognized for its thoughtful product innovation, athlete-driven development and strong commitment to sustainability and responsible manufacturing.

A trail runner loading a deuter Streamer reservoir, featuring HydraPak's Slide-Seal top, into a deuter Traick running vest.

HydraPak Soft Flasks and Hydration Systems for deuter Packs

HydraPak and deuter’s partnership is built around creating hydration products that feels like a natural extension of deuter’s packs. Rather than adding hydration as an accessory, the two brands work together to match the shape, fit and function of the hydration system to the pack and its intended activity, whether that’s trail running, hiking, trekking or biking. That approach can be seen in the Streamer Flask line, which offers multiple shapes and capacities for different pack fits and hydration needs. Deuter has also integrated Streamer Flasks into its Traick trail running vest, giving runners a complete hydration system designed to work together from the start.

Close-up of a person locking a HydraPak Slide-Seal top into the hydration sleeve of a purple deuter backpack.

deuter Streamer Reservoirs for Hiking, Biking and Trekking

The same approach extends to deuter’s Streamer reservoirs. The Streamer SQ 1.5L uses a shorter, wider shape specifically suited to hip bags, while the 1.5L, 2L and 3L Streamer reservoirs provide options across deuter’s broader pack range. Features including HydraPak’s Slide-Seal™ Top and Universal Hanger make the reservoirs easy to fill and integrate across different pack designs, while HydraPak’s fully reversible construction provides the easy cleaning and care deuter values. Together, the brands focus on the details that make hydration work better within the pack, from reservoir shape and stability to compatibility, cleaning and ease of use.

A trail runner hydrating with a deuter Streamer soft flask while wearing a deuter Traick running vest.
Close-up of a deuter Streamer reservoir featuring a HydraPak Slide-Seal top, ready to be loaded into a deuter hiking pack.
A female trail runner crouching by a small, rocky stream to fill a blue deuter soft flask with water, wearing a light grey deuter hydration vest.

Want to Work Together?

Learn more about integrating HydraPak products into your vests, apparel and belts.

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