The Halo Headband is the best performing headband in the world! Each handband is designed to make sure they stay in place during any activity and keeps sweat out of your eyes and face. You'll never be able to wear another headband again!.
There is a "sweatseal" on the front/inside of the band.
It literally collects and hols a mass amount of sweat, when you lean forward or take it off, it now becomes a shower of sweat from that area.
Good concept, but for heavy sweaters it doesn't work well.