This is an officially licensed Tweedledee hat from Alice in Wonderland, and is most definately a must-have.The hat is purple and orange twill, with a lime green brim. The top of the hat boasts a hilarious green wind propeller on the top. The inside of the hat is fabric lined and features a secret pouch with a fortune just or you. This hat is not adjustable, but has a fabric covered elastic strap in the back for a little extra room. The hat fits head sizes 56-59cms (22.5 inches).A great accessory to any fun costume idea you may have, nerd or Tweedledee Halloween costume.