65% Polyester, 35% Cotton S=(US 37.5), M=(US 40), L=(US 43), XL=(US 46), 2XL=(US 48.5). Button closure Machine Wash 【High-quality fabric】 The fabric was made by cotton and polyster, not easy to wrinkle,linen feel shirt, comfortable to wear, comfortable fabric can give you a better wearing experience. 【Features】Long sleeve striped button down shirt, summer casual, loose fit. 【Occasion】Casual, outdoor, joint, beach, date, wear her you can enjoy your leisure time.