Review on 🚘 LivTee Blind Spot Mirror: 2" Round HD Glass Frameless Convex Rear View Mirror - Adjustable Stick for Cars, SUVs, and Trucks (Pack of 2) by Keith Morris

I doubted the adhesive would hold them in place but was pleasantly surprised that after the summer heat and a few car washes they still work well. These are glass mirrors with an adhesive that sticks them to a plastic 'hinge' which is then glued to the side mirror with another adhesive. It's been about 3 months and I have them on both mirrors with no problems. The hinge is large, giving you a lot of flexibility when placing these mirrors. They offer a wide angle that covers blind spots well.