I purchased this a few years ago and wore it several times before storing it. I'm selling it because I don't have the opportunity to wear it anymore. - Brand: upperlights - Size: OS (One Size) - Material: 100% Cotton - Color: White - Design: Pocket, French Sleeves - Length: 52cm, Width: 48cm (slight variations may occur) It should fit comfortably for those who wear a size M. Please feel free to ask any questions in the comments. I look forward to your purchase if you understand that this is a used item.