The hats are made to fit a range of head/hair sizes. They have a bit of give (if your head is on the larger side) and they have a tie for around your head (if your head is on the smaller side and want to tie it on). The hats are best for someone with a head circumference of 22"-23" (or slightly smaller or slightly larger). The hats are FINAL SALE so please be sure you feel comfortable with that before purchase.