In the 80's we called them "sweat bands" and they absorbed sweat and perhaps held your hair in place. Today they call it "PreWrap<code></code>and it primarily keeps your hair in place and, well, we don't really care where the sweat goes as long as you look good. Yes you have probably never seen it before. "PreWrap" is what goes under the white athletic tape of an ankle or wrist. It used to only come in beige or your school colors, but shut the front door if this isn't in every girls athletic bag.

 

OMG Becky, Look At Her Head!