Women's Hydrologic® Cooling Vest merino 4V Powersheer™ Mini Battery is

4V Powersheer™ Mini Battery is the trusted power source for many of our heated jackets

fleece-lined elastic hand openings

or competing in endurance sports

check out our Mobile Warming® Technology Battery Compatibility Chart

Women's Hydrologic® Cooling Vest merino 4V Powersheer™ Mini Battery isBeat the heat with the Mobile Cooling Hydrologic Vesttrusted by outdoor workers, athletes, and adventurers alike. Powered by Hydrologic evaporative cooling technology, this vest uses a Super Absorbent Polymer (SAP) quilted liner to retain water and deliver hours of cooling comfort. Simply soak for 12 minutes, wring out, and wear over your shirt. As water evaporates, it pulls heat from your corehelping regulate body temperature and keep you going in