A "The Other Half" backplate for Jolla phones. This version has a slightly raised area around the holes for the camera lens and flash, intended to offer extra protection. There's also a gap to allow magnetic lenses to be attached (magnetic ring and lenses not included). The diameter of the hole for the lens is 8mm and the flat area has diameter just over 16mm (see the images for a diagram).
Thanks go to Grimtech for this design
There's also a version without the gap for the magnetic lenses.
For more details, check out the website.