This is a UV hat from Three Coins. I haven't had many opportunities to use it, and it's been in storage. The size is apparently free size, and there's elastic inside that makes it fit your head when you wear it. * The elastic cannot be adjusted. I've attached photos from the product introduction page as a reference for how it looks when worn. This is a used item and has been stored by a private individual, so please consider this before purchasing. I plan to fold it up small for shipping. * I am also selling a different color. * Please refrain from price negotiations.