COMME CA ISM vest. It's thin, so it can be worn with both short and long sleeves, making it usable all year round. See the 3rd photo: There's a hole near the armpit. If you're concerned, it looks like it could be sewn from the back. It's not very noticeable. See the 4th photo: There's a slight stain on the chest area. It's only noticeable if you look closely.