I tried it on once. There are wrinkles, but I think they will come out if you wash it. This is a collaboration nightcap between Sanrio's Pochacco and ITSUKI. A nightcap that prevents friction, static electricity, and bedhead while you sleep, reducing hair damage. The hood is a balaclava type, like a hoodie with only the hood part. By adjusting the size with the loop, it can be used by anyone from elementary school students to adults, regardless of age or gender. * Head circumference 51cm~62cm The part that touches the hair is 50% silk and 50% cotton. The outer fabric is 100% cotton, a natural material.