I wore this hat often and liked it, so there is some soiling on the inside where it touches the forehead (see the last image). There are no noticeable stains on the outside. It's made of a slightly thick material with a textured surface. It's listed as free size, but there is no size adjustment belt in the back. I measured the inside circumference with a measuring tape, and it's approximately 58cm. I will ship it in a cardboard box to prevent it from losing its shape. - Brand: JACK BUNNY - Design: BY PEARLY GATES - Color: Navy - Style: Cap Thank you for looking.