"The Griz" remote mic holder.
Named after Firefighter Tim Griswold who designed this awesome little tool. 
Clip the Griz anywhere on your gear or uniform and you have an instant mic loop. Need to keep your alarm keys handy or a place to hang your mask? Not a problem, the attached keyring or second clip keeps everything close at hand. This works particularly well if you keep your radio strap under your fire coat and need some flexibility and control of the speaker mic on the outside of your coat.