80% combed cotton / 20% polyester. Herringbone reinforced necktape. Half-moon yoke for decoration and hanging loop in the back neck. Double layered reinforced shoulders for extra comfort. Reinforced arms and elbows with tone-on-tone twill panels in polyester for extra ruggedness. 2x2 rib collar & cuffs & hem for wind and cold protection. Set in sleeves. Flatlock forward shoulder seams to avoid friction.