Neckline: Crew neck / U-neck Material: Acrylic / Rayon (synthetic fiber) Season: Spring/Summer Stains, tears, odors, etc.: None Length: 23 cm Shoulder width: 43 cm Sleeve length: 54 cm The tag says XS, but it fit comfortably on my family member who usually wears M and has a broad back, so I think it's about a size M.