Polo shirt material, pique knit button-down shirt. It was 100% cotton with stretch, making it easy to wear, but it no longer fits. I tried to remove the yellowing around the collar with OxyClean and other methods, but it wouldn't come out, so please forgive this. [Flat measurements] Length 72 cm Width 46 cm Shoulder to sleeve 74 cm We would appreciate it if those who understand that this is a used item would consider it.