Review on 360° Adjustable Rotatable Bike Mirror - ROYOR Wide Angle Bicycle Mirror, Handlebar Mount for Electric Bike, Mountain Bike, and Road Bike by Johnathan Delgado

Stable fastening system. Good visibility and easy to adjust. We put the bike on a trunk and rode it 500 miles and it just leaned over and didn't break. I wish it was more folded up or taken down for longer trips but I'm impressed with the quality. At first I was afraid that he would fly away and hit the windshield of some setting. It came in a nice cloth pouch but I'm not sure why you'll ever need it. It comes with a few layers of black silicone that can be used to attach to a bike. Very stable on bumps.