I think it's very stretchy, so you can wear it with a beautiful line. Made of polyester fabric, it's light and comfortable for a round of golf. It's in very clean condition with no signs of use. ● Brand: St ANDREWS ● Color: White ● Size: S ● Flat measurements (cm) Length: 55 Width: 41 Shoulder width: 36 Sleeve length: 59 Please forgive any slight errors.