AfterShokz earphones

As I'm starting to push my running mileage up, so I've started to wish for something to liven my runs up a little.  A little music would be perfect, but I am also aware of how unsafe running with earphones in is.  Then I saw these, and 'im outdoors was kind enough to give them to me for my birthday.  AfterShokz aren't like normal earphones, rather than sitting in your ear, they sit outside it and you 'hear' the music through your bones.  It does sound crazy but they worked a treat.  I could hear my music but also the car coming up behind me and a woodpecker too.  
I don't normal write reviews of produces but these blew me away.  If you want a safe way to listen to your music while out running or cycling these are perfect.