The distinctive feature is the string at the back of the neck that can be tied into a ribbon. It was easy to use for both everyday wear and formal occasions. Size is 38. Material: Polyester (synthetic fiber) Color: Black系 (Black-based) Neckline: U-neck Season: Spring/Summer Stains, tears, odors, etc.: None There are no noticeable stains, etc., but it is a used item. Thank you for viewing.