These hats have a normal inside diameter of approximately 7 inches but with the elastic headband will allow up to approximately 8 inches(22-24 inch circumference). Grab yourself a throwback clear colored sun visor and you'll be styling this summer. We have them in many colors to match whatever crazy outfit you're wearing. Grab a group of friends and stock up on each color for the whole party. Take some on your vacation or trip to the beach and great for fancy dress, pub golf, 80's rave, Poker too. Your Logo is welcome!