Comvison Long Sleeve Women Shirt White Women T-shirt Button Down Shirts Work Wear 5% polyester/ 95% cotton Imported High quality fabric keeps you comfortable. Great for office, work place or other occasions. Size: Please refer to Amazon Women's Regular Size Chart before placing the order. It is Us size.Please choose the size you wear in your daily life. Size Xs= US size 0-2, Size S=US size 4-6, Size M= US size 8-10, Size L=US size 12-14, Size Xl= US size 16-18. It is thin and light. It also can be a base shirt inside when you meet the cold weather. If you have any doubts, please feel free to leave me a message. I will reply you in 24 hours.