This hat is black (sumi), size L, with a brim length of approximately 7cm. The material is 100% nylon (Ballispan, which is strong and has a cotton-like texture). It does not have a string. It has been hardly used and has been in dead stock condition, so I think it's clean. As it is an old item, there may be some dirt, scratches, or fading due to storage. Also, I don't want to create any large, strong wrinkles, so I will ship it via Takkyubin Compact (20cm x 25cm x 5cm), but there may be some slight folding wrinkles.