1) Aerobics absorber 2) Band 3) Bit of workout gear 
[n] - a band of material tied around the forehead or wrist to absorb sweat 2. [n] - a band of fabric or leather sewn inside the crown of a hat
a band lining the inside of a hat or cap to protect it against sweat from the head. · a band of fabric worn around the head to absorb sweat.