Ultraspire Zygos Lightweight Hydration Pack for Ultra Runners - Pitch Black, Large

About this item

• Portable Pockets and Compatible Containers: This design includes 8 convenient pockets for travel, such as 2 zippered shoulder compartments, a dual 4-way stretch mesh pocket, a couple of stretch mesh pouches (with one zippered for accommodating larger cell phones), a zippered side compartment, and a side pocket with magnetic closure. Compatible with UltraFlask, Formula 250, Human 20 oz 2.0, or a Collapsible Bottle (NOT INCLUDED).
• MAX02 Sternum - The Max02 Sternum is a shock cord securing system that helps create a comfortable & natural breathing pattern while at the same time keeping the pack secure. The shock cord allows for stretch outward and 100% rebound which keeps the pack snug against your body empty or fully loaded with no restriction of movement.
• Reinforced Main Back Compartment - The main back compartment has been reinforced at the stress points with XT fabric which contains stronger than steel ripstop fibers. This pack includes a 2-liter reservoir that fits into the removable insulated bladder compartment.
• Insulated Bladder Compartment - Made of Mylar, the insulated compartment reflects and traps temperatures to help keep fluids hot or cold.
• ErgoFit - The human body is complex with intricate detail and function. The same attention to detail is present in the design of our packs to enable precise movement, contact, and weight distribution which ensures that there is never any inhibition to the biomechanics of the human body.