Fabric:95% Polyester,5% Spandex. Slim fit polo shirt short sleeve,high elasticity,make you feel free when you do sports such as running,golf,tennis. Breathable&quick dry polo,keep you cool in hot summer even you do strenuous exercise.Skin-friendly,super soft. Basic polo t-shirt,three buttons down,also suitable for casual daily wear,work,party and travel. Size:You can refer to the size chart before ordering,especially the CHEST size.