Review on 🔒 Ultimate Privacy Protection: Webcam Cover (6-Pack) for MacBook, Laptop, PC, iPhone, Tablet, Smartphone - Ultra Thin Camera Slide, Black by Robin Crane

It's ok, they definitely do the job. They're not pitch black, so if the shutter is closed but your camera is on, you'll see a blue wall. Nothing can be seen through it, it is almost completely opaque, but not 100%. It opens and closes easily and seems to be holding up well. I've had mine since the day I got it a few months ago with no problems. You definitely can't move it, otherwise the adhesive part won't stick again. The plastic is also quite flimsy, not as good a material as the ones I've had in the past. Overall I'm happy with it though and my biggest complaints would be that it's not 100% opaque and a bit thin which hopefully won't be a problem.