6.8 oz./yd (US), 11.4 oz/Lyd (CA), 100% Peruvian Pima cotton. Grey Heather is 90/10 cotton/polyester. Comfort of luxurious Pima cotton. Softly shaped for a flattering fit. Three Dura-Pearl button placket. Shape-keeping DuPont Lycra ribbed cuffs. Additional yarn in collar & cuffs for a neater appearance and greater durability. Hemmed sleeves. Durable double-needle stitching on hem with clean-finish side vents.