It is made of 50/50 cotton/polyester, 9.3 oz. (US) 15.5 oz. (CA). Oxford is a cotton/polyester blend with a 47/53 cotton/polyester ratio. Moisture management characteristics of Dri-Power. Cuffs and waistline are made of ribbed knit. Gussets on the sides and a "R" Russell Athletic logo tab on the left hem.