Material:Silk,POLYESTER High performance ：Soft smooth polyester fabric with high quality. Light weight,moisture wicking,breathable,cool to the touch,never feels sticky even on hot, humid days. Occasions: Classic polo shirt are great for men daily wear, office work, business casual, golf, tennis, traveling or outdoor; Suitable for summer, spring, fall. Lightweight and breathable:This men's short sleeve polo shirt is made of super lightweight polyester pique fabric, giving you maximum ventilation and offering you fresh and nice wearing experience. Easy care ：Machine wash/hand wash. Don't bleach. Don't Exposure. Anti-fading, anti-pilling, no wrinkled, no shrink. runs true to size.Strictly choose according to the size chart, if you are unsure, please contact us!