Throat Mic for Rocky Talkies

We are a group of rock and ice climbers who have been using the newly popular Rocky Talkie radios while out in the mountains. Looking to attach a throat mic to them for hands-free use. Any suggestions on a brand or type? Thanks in advance.

Those are FRS radios but they have no hands-free or Vox capabilities. You can but headsets for them, but they will need a PTT. Look for a standard Kenwood (K1) connector.