Aerial7 660440 Red Exercise Sound Disk Sports Headband Headphones - Soft - Red Wicking fabric draws moisture away from your head allowing it to evaporate more rapidly. Engineered to deliver the highest-quality listening experience from your mp3 player or other music device. Built-in microphone for use with iPhone, BlackBerry, and other mobile devices. The Sound Disk is only 8.5mm thick and delivers a full spectrum sound experience.