COOLCORE® performance fabrics use patented three-yarn construction to wick moisture away from the body and keep the garment up to 30% cooler when working in the heat Fast wicking sweat zones extend down the back and under the arms to accelerate drying in high-sweat body areas Chemical free moisture wicking allows shirt to dry faster, reduces saturation and doesn’t wash out over time UV protection helps block harmful rays from reaching the skin Durable pilling-resistant fabrics extend product life Drop tail extended back provides extra coverage when working overhead Seamless shoulders reduce discomfort from straps and harnesses 100% Polyester material (pique mesh)