6.5 oz., 100% soft combed ringspun cotton pique tubular knit. Taped welt collar and cuffs. Three-button, clean-finished placket with woodtone buttons. Double-needle stitched bottom hem. (Ash is 99/1 cotton/poly; Sport Grey is 90/10 cotton/poly; Dark Heather and Heather Forest are 50/50 cotton/poly.