What's the name of the little bump in the hair band?

Hello! A small lump in the hair band. Can be called anti-slip teeth, hair bands are also called headband hairpins. It's a big semicircle for girls, with both sides stuck behind the ears and made of cloth or plastic. Hair band, including a hair band rack, which is internally provided with a groove, including a rotating drum, a metal wire and a crystal drill. The groove is mainly designed for anti-skid.

There is also a concave and convex hair band. This is a kind of. Metal hair band with coating and black paint. Most men and women use it. Mainly used for invisibility, sports, hipsters, face washing,