This is a mount that enables you to attach your GOPRO to your baseball cap, or any other cap with a visor. I think it would work best with a GOPRO Session, due to its lighter weight, but it worked perfectly fine with my gopro hero 4. You will need to use a brim and supports for this print. I selected the print settings on the prusa slicer to 0.2mm (SPEED) and it took around 3 hours to print.