Created in collaboration with Hydrapak, Shimano's Unzen is a 2 Liter hydration pack with an easy to use, adjustable harness system, and just the right amount of storage for a mid size cycling hydration pack.
The main compartment holds the hydration system, and can easily accommodate a lightweight rain shell and the two front zip pockets can handle tools, tubes, snacks, keys, phones, etc.
The bite valve, which self seals after each sip, features a twist on/off bar to prevent leaks when not in use. The slide-seal top entry of the reservoir provides a huge opening for cleaning and filling. It can even be turned inside out. The whole drinking assembly is BPA and PVC free and rated for food quality.