My FPV kit came with the black rubber goggles. My eyes aren't great, so I need things to be optically right, or I can't focus and I get double vision. I discovered that the goggles are way off on focus, with no means to adjust. I also discovered that, by positioning the phone a significant distance off the foam banking pad, the image appears sharp and at very large virtual distance. So I designed a spacer and clip and had them 3-D printed. Now I'm loving these goggles! Can't wait for my next flying opportunity.