Product: Zonetech Car Round Blind Spot Mirror-Zone Tech Thin Universal Fit-2 inch Stick on SUV- Rearview Aluminum Border Vehicle Mirrors
Overall sentiment: negative
Customer reviews:
Does not look or feel like glass. More like plastic. As a result, you really cant see super clear. My first thought was better than nothing. 
 Extremely poor quality. Worst I have ever seen. Do NOT buy. Probably made for 3 cents each and I paid over $6. Stupid me. Learn from my mistake. 
 They are not clear, its a plastic reflective wrap that is done poorly and hard to see anything out of. 
 Don't waste your money. These mirrors are useless. It shows the exact same thing your mirror shows, not the blind spot at all. I tossed em in the garbage and bought another set that has an offset. They work much better. 
 These mirrors do have a somewhat better appearance than those with a black plastic rim, however the reflections are not sharp and it does not display much more than the OEM mirror on the vehicle. This may be one of those items that is difficult to select online. You may be better served by going to the store and seeing and touching the item. 
 Horrible quality. The metal frame around the glass is low quality metal that is all tarnished. Pathetic 
 These are worthless. Warped around the outside. 
 Wavy reflection reminds me of a carnival funhouse mirror. Not premium quality what-so-ever. I wish I would have examined them before sticking them on. Stay away. 
 Convex, but not angled, so half of what you see is your own car. 
 Works like it should, but very cheap and packaged horribly. They came scratched up becuase they do not protect the plastic mirror from the plastic packaging. 
 Not happy, they are not perfect dome.