Galvanic skin response sensors monitor hydration levels passively

A fine-tuned, modern fit in washed-out earth tones lends subdued style to this technical mens button up, featuring the venting and sun protection you need for the trail. The sleeves roll up and fasten, allowing you to adapt to the conditions, and sweat-wicking technology pulls moisture away from your skin to keep you dry over long miles.

Nesting seams lay flat against sensitive areas