hatband
/ˈhætˌbænd/
noun
- A strip of material, such as cloth or leather, that goes around a hat, often for decoration or to show the hat's size.
- He adjusted the leather hatband on his cowboy hat before stepping out into the sun.
- The hatband was embroidered with tiny flowers, making the hat look elegant.
- She replaced the old hatband with a colorful silk ribbon to match her dress.