6.8 oz., 100% Peruvian Pima cotton; Comfort of luxurious Pima cotton; Grey Heather is 90% cotton, 10% polyester; Three-button placket; Dura-Pearl� buttons; Durable double-needle stitching on hem; Additional yarn in collar & cuffs for a neater appearance and greater durability; Shape-keeping DuPont� Lycra� ribbed cuffs