Pearl Izumi - Run Women's Pro In-R-Cool Tri Singlet 82% Polyester, 18% Elastane, Upf 50+ Imported 82% polyester 18% elastane Imported product 2015 Spring/Summer P.R.O. Transfer Aero with In-R-Cool fabric powered by coldblack provides aerodynamic benefits and optimal cooling with reflective sun protection Direct-Vent back provides superior ventilation. Integrated bra top offers maximum support