Ergodyne - EGO12137 Wear this Chill-Its 6688 Cooling Hi-Vis Sun Shirt with UV Protection wet or dry. Simply wet this lightweight shirt to activate instant cooling relief that lasts for hours. Dry, long sleeves wick moisture away to absorb sweat from the body. Type R Class 2 shirt is designed for enhanced visibility with 2" segmented reflective tape and breathable comfort with evaporative technology for immediate cooling and UPF 50+ protection against the sun's harmful rays when working outside. It is built with a performance fit with a stretch fabric that provides easy mobility and unrestricted movement. Anti-odor treatment and breathable mesh paneling in the underarms and back keep workers comfortably fresh, cool and dry all day. Machine-washable shirt is rated and tested for 50 washes. Medium size fits chests up to 43" diameter and offers 25-9/10" long sleeves and a 28" long center back.