100% Polyester Bird-eye knit fabric, Thermally applied 3M Scotchlite reflective tape, Knitted collar and cuffs with contrast stripes, 3 button placket, Added wicking Zelcon® treatment by DuPont, Conforms to EN471:2003 class 2 & GO/RT 3279, Certified to Solar Protection Factor (SPF) rating = 50+