Patagonia organic cotton check short-sleeve shirt, comfortable to wear. - Brand: patagonia - Size: XS - Color: Blue check - Material: 35% organic cotton, 65% polyester For reference, the size is XS, but it feels like a S or M. I am 172cm tall and weigh 66kg, and it fits just right, feeling slightly small. It has been used a few times and is in very good condition, but please consider that it is used. Thank you for your consideration.