UltrAspire Zygos 4.0

Retailers' Descriptions

Here's what other sites are saying:

Ultraspire Camp & Hike Zygos 4.0 Hydration Pack Black Large UA116BKLG. 0 hydration pack is very versatile. This pack is lightweight and high capacity a comfortable wrap around style with full compression allow for the lowest profile empty or fully loaded. The Zygos 4.0 comes with a 2L reservoir and a magnetic clip to keep your hands free. New expandable mesh on the back panel gives 4 liters of extra capacity as well as storage in the front with extra pockets. Whether you are fastpacking mountain biking in a fast race ultra race or summit assault this hydration backpack is the solution for any athlete. Now available in five sizes.

- CampSaver.com

The Zygos 4.0 replaced the UltrAspire Zygos 2.0 Race Vest.

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