High-Visibility Evaporative-Cooling Vests

High-visibility evaporative-cooled vests use water to cool workers. Cooling effectiveness is based on ambient air temperature as compared to insert-cooled vests which cool to the same temperature regardless of ambient temperature. Evaporative-cooled vests do not cool as effectively as insert-cooled vests in high-humidity where the water in the vest takes longer to evaporate. They also don’t cool effectively when worn under full suits that don’t allow air to circulate around the body. High-visibility garments are made of bright colors and have reflective materials on the front and back to make workers more visible. They are worn by construction workers, road crews, and emergency response personnel.