The rings go on easily and do great job at protecting the cameras on the back of the phone. Also, being able to select a color is nice to complement your case.
The Glass Elite Camera Rings Lens Protector fits the iPhone lenses securely and protects them. The problem is that the lens protectors may be damaged when placing the iPhone on a flat surface. I use a case that has a bezel to protect the iPhone lenses but it is not raised sufficiently to also protect the Zagg lens protectors.