This is a GU knit sweater. It's navy, so it's easy to match with other clothes. The size is M. As shown in the fourth picture, there is some pilling. There are no other noticeable stains, but please understand that this is a used item that has been inspected by an amateur and stored at home, so there may be some oversights. Thank you for your understanding. I will take measures to prevent water damage when shipping.