I like neoprene covers. I’ve had too many problems over the years with flip caps. It seems like they always either lose a spring or just start falling off. Some bikini covers are OK and some aren’t. I like the rubber ones my Vortex came with. Overall though, I find that neoprene covers fit a wide variety of scopes, slip on easily and help protect the guns in the safe or in a 2 gun case if they bump each other.
