9 oz. 100% Portuguese cotton twill flannel. Single needle construction with French seams. One flap chest pocket and one regular chest pocket. Our signature California collar. Unbreakable Japanese urea cat's eye buttons. Lockstitched buttons and button holes. True to size. Buy your normal TS size. Tailored fit and high armhole. Shorter tail length to be worn untucked. No pleats for easy ironing & clean lines. Wash cold and tumble dry low. Proudly made in Portugal.