Review on Utopicar XLarge Blind Spot Mirrors for SUVs, Vans, and Pick-up Trucks with Spacious Door Mirrors (2-pack) by Loud Forrest

Simple, it's been about 18 months and they're still on my car. Summer heat, winter snow and ice. Between rain and debris. Even the occasional deer crashed into the side, folding the mirror at around 45 mph. The blind spot mirrors are still glued on. When you glue them, pay attention to the curve in the corner of your mirror and decide whether to stick it to try to match/follow that curve. You can twist and stick it in almost any direction and it works. Clean the glass with Windex, then alcohol. Heat the jar with a hair dryer or heat gun. Little bit. Pull off the backing film, keep it pressed, count to 30 with light pressure and you're done. I'm sure the seal will eventually break, but that glue isn't going anywhere. Funny, I bought them to help with towing and now I use them all the time.