not extra large [SEP] this is definitely not extra large it is just your standard run of the mill shower cap that can be purchased at any local pharmacy or grocery store and frankly it is not even the best of those that i have tried the elastic is loose and lets in a good bit of moisture and i have a pretty big head so the fact that it is loose on me should say something if you are looking for a truly extra large shower cap look for the simply elegant extra large shower cap with a drawstring sold on amazon as well it is a big haired girls dream come true