This is a fleece vest with a nice feel. Since it has no sleeves, it's easy to move in and keeps your sleeves clean, making it comfortable for work. It's also recommended for wearing over pajamas. Size: Equivalent to M, but no size label. Please refer to the flat measurements below. Shoulder width: Approximately 42cm Width: Approximately 50cm Length: Approximately 64cm (from the back collar to the hem) The armholes are wide, so it's comfortable and doesn't feel bulky under the arms. There are pockets on both sides, which is convenient. We plan to ship it compressed as much as possible. Size: M