Pearl Izumi - Run Women's Elite in-R-Cool Tri Sleeve Less Jersey 63% Nylon 22% Lycra Spandex 15% Polyester, Upf 50+ Imported 63% nylon, 22% LYCRA spandex, 15% polyester Imported product 2015 Spring/Summer ELITE Transfer In-R-Cool fabric powered by coldblack provides superior cooling and reflective sun protection ELITE Transfer In-R-Cool fabric features LYCRA Sport that helps garments maintain original compression levels