Rainbow edge effect. So annoying and took me many before staying with iCarez [Full Coverage Tempered Glass] Screen Protector for iPhone X (Case Friendly) Highest Quality Easy Install [2 Pack 0.3MM 9H 2.5D] with Lifetime Replacement Warranty - Retail Packaging https://www.amazon.com/dp/B074H1MX1Z?ref=yo_pop_ma_swf

They make it just right. It fits in my Caseology Legion and girlfriends Otterbox Symmetry with no rainbow effect or case edge lifting.

I like the iCarez one. Just has a little hole cutout at the top.