This is a long-sleeved Yves Saint Laurent shirt. Of course, it is authentic. The color is white, and the material is 80% cotton and 20% linen. The size is measured flat: Length/approx. 80cm, Width/approx. 50cm, Shoulder width/approx. 48cm, Sleeve length/approx. 54cm. It feels like a size L, but please refer to the actual measurements. This item shows signs of use. Those accustomed to USED items should still be able to wear it, but please refrain from bidding if you are looking for a pristine item. We are looking forward to bids from those who understand USED items. Notes Due to work, email replies may be delayed. Please understand this in advance. There are fading, stains, and writing such as names. Please understand minor scratches and stains that may occur during storage. Comments Please feel free to contact us if you have any questions.