Sadly I couldn't find the CAD file for my original cat ears for headphones. So you'll have to stand the sub par mesh fusing I did for this. But those parts face inwards, so you don't see them while wearing it.

How to Assemble

1. Start by putting the top part of the strap inside the clamp.
   
2. Push in the bottom part of the clamp.
   
3. Now slide it over the thicker part of the strap where the speaker sits.