One size fit all— is for a child/teen. My 11 year old will fit it ok, . The arms are long but the waist is a bit short. She won’t be able to wear it for more than a few years before it is too small. She enjoys large oversized hoodies. Would fit a petite woman. Teen ok. Nice quality fabric. Very thick material and soft sweat shirt material. Will enjoy! Shipped fast and hassle free.