2PCS Blind Spot Mirror for Car - Convex Rear View Side Mirrors Kit, Rectangular Shaped HD Glass Wide Angle Rearview Stick-On Blindspot Cover Accessories with Rain Parts

I have lane change blind spot alerts along with a backup camera, but I'm still not confident backing up and thought these would be helpful.They are small and made of plastic with a glass mirror, which really helps give you a larger wide view without blocking much of your regular mirror. They are attached to the base with a ball that swivels, so you can adjust it. The ball seems tight enough to hold it in position and will most likely stay tight if you aren't constantly adjusting it. They have a low enough profile that your mirrors can still be folded in without any obstruction.They are easy to apply on a clean surface with double-stick tape, which is my only concern. They hold well now, but I'm not sure how long they will hold up being outside and susceptible to weather 365 days a year, along with car washes on top of that.They're a pretty helpful product.

I was worried that my car had a blind spot. It has sensors, but they don't always work, so I felt that I needed to do something. I saw these and thought I'd give them a try. I'm glad I did!!! They stick very firmly onto the side mirrors of your car, and give a BROAD field of vision. Best of all, you can tilt them in all directions once you've mounted them, since they stand off a bit from the mirror on a post. Best supplemental mirrors I've ever owned! No more blind spots for me!