Runcam
$139.99
All parts are printed in TPU.
I recommend black to minimize glare on the lens, that being said, you can get any colour you like and go nuts with a Sharpie! :)
Nab a Runcam Thumb Pro or a Runcam Thumb Pro ND, SD Card Bundle.
A big thanks to Timeless3D for the original design. Check out his Thingiverse here.