Stay visible and beat the heat with the Mobile Cooling® Hydrologic® Pro Vest—designed for serious cooling and job site safety. Featuring ANSI/ISEA 107-2015 Class 2 certification, while delivering hours of active cooling through Hydrologic® SAP (Super Absorbent Polymer) evaporative fabric. Just soak, wring, and wear—evaporative cooling begins instantly, pulling heat from your core. Add optional cooling ice packs to extend relief in extreme conditions.