This is a thin, long-sleeved gray sweater made of 100% acrylic. It has only been tried on indoors and never worn outside. I am selling it because I purchased a similar item. There are no noticeable stains or frays. The size indicated on the neck label is M, but the tag on the hem says S. In terms of fit, (I am 158cm tall, of average build, and usually wear M) it felt snug, more like an S size. I think it would be suitable for spring and autumn. Please understand that this is stored by a private individual, and there may be wrinkles due to packaging and shipping. Please consider purchasing with this in mind! - Brand: earth music&ecology - Color: Gray - Material: 100% Acrylic - Size: M Thank you for looking.