These fan shrouds and Inner hole covers help stop the last bit of light from getting into your eyes on the Dominator model goggles.
The Fan shroud can be printed with or without the Shark Fin. With the Fin your goggle case will not zip closed, the standard shroud fits fine.
The Internal hole plugs have one smooth side, and one side with a lip to hold it in. The lip goes toward the strap. If it takes excessive force to snap them in, trim a little of the retaining rib from the top and or bottom to help it pop in. Some goggles seem to be a bit tighter on the ends.
I prefer printing at a higher resolution, but they both work at 0.3-0.1mm without issue. I print the shrouds with no support, and only get a couple strings lose, but YMMV.
Shrouds: Rotate so flat side with 4 holes is on bed.
Plugs: Side with full perimeter lip should be down.