65% Polyester for durability, and 35% Cotton for comfort 210gsm pique knit fabric Complies with standard AS/NZS 4399:1996 and AS/NZS 4399:2017 for UPF protection JBâs 3-button placket Knitted collar with reinforced herringbone tape on inside neck seam Straight hem with side splits, set-in sleeves with open cuffs Easy care, reduced pilling fabric