This is a black baseball cap from the brand IkucheL. I bought it online, but it was too small for my head. So, I only tried it on once and haven't used it since. The photos were taken with a head circumference of 58cm. The size can be adjusted from 53 to 65cm, but I think it's best to use it around the size in the photo, which is 58cm. I will fold the fabric part for shipping, so please be aware of that.