This is a super cute floppy hat that has a wire brim around the edge so you can mold it any way you want. It is able to be packed and can unfold and be flattened out again if needed. Has a classic black and white stripe. Can be dressy or casual. Does not have a size. I picked this hat up in Seattle when I was traveling. I keep my self out of the sun as part much as possible. I had forgotten my wide brim hat at home, and this one worked great. This hat does have a tie that can go underneath your chin to keep it from blowing off in windy conditions. Brim is approximately 6 1/2 to 7 inches circumference around the head is approximately 23 1/2 to 24 inches.