Pearl Izumi - Run Men's Elite in-R-Cool Tri Sleeve Less Jersey 63% nylon 22% LYCRA spandex 15% polyester Imported 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 ELITE Transfer Aero fabric is strategically placed for superior aerodynamics. Merrow stitch construction for superior next to skin comfort 10" zipper for venting. Two back easy access envelope pockets