This is a hair drying towel for children. I'm selling it because my child has outgrown it, even though it's only been used a few times. It's cute to put on after swimming or after a bath when you can't dry their hair right away. [Measured flat] (Please note that there may be some errors due to amateur measurements.) Opening of the hat... about 18 cm Height... about 15 cm I think it's for children around 3-5 years old.