100% polyester interlock. Quick-drying fabric. Ribbed collar. 3 button placket. Contrasting neck tape and side slits. Contrasting piping on the shoulders. Double-needle finish at bottom of sleeves and garment. Certified STANDARD 100 by OEKO-TEX®N° CQ1007/7, IFTH. 100% polyester interlock: ultra resistant, light and breathable. Quick-drying fabric. Contrasting neck tape and side slits.