Tennis Headbands

My father told me about these players who wore headbands that were real thin, nobody knows what they are called, who makes them, and where can I buy?

tennis headbands headbands.

headbands

Headbands tennis.

I never heard another band as usual.

If there is such a special headband thin, you are able to describe the best I can learn more?

headbands

bands just

they are no different from any other headband