Pearl Izumi Men's Fly In-R-Cool Singlet Body: 50% Nylon 50% Polyester, Upf 20+ Technology: 24Hr Ice-Fil Weight: 127 G, M2 Imported Fall/Winter 2013 Read the care content label on the inside of your garment for specific instructions; use simple detergents with no additives The Men's Fly In-R-Cool Singlet is the ideal race day choice with our innovative In-R-Cool fabric technology that cools the body while you exercise The perfect balance of anatomic fit, performance engineered materials and the personal interface between athlete and gear