They're by no means durable as they're made out of regular plastic, but they'll protect your flashlights from everything that hits the light. My headlights are at bumper height and when parked on the street they shine brightly. I have some creases in the headlight mounts so they push in, but they prevent the glass from making contact with other cars' rear bumpers. The Hella badge is removable or can be mounted upside down if your lights are mounted that way. Suitable as a glove for the 500 series.