This is a bucket hat from Maternal Instincts. Size is 55.5cm. There is no adjuster. It's used and shows some wear, but it's clean with no noticeable stains or scratches. To keep the price down, I plan to ship it in a shipping plastic bag, folding it lightly so it can be sent via Yu-packet Post, etc. Please understand that there may be some creases. The color in the photos may differ slightly from the actual product due to the lighting. In the fifth photo, the top of the hat appears faded, but this is due to the light; there is no discoloration or fading. Thank you for looking. I have other items for sale, so please take a look if you'd like. #HatPick Hats Kids Outdoor 55cm 56cm