Basic shades for a basic price. I used these while on my longboarding trip in El Paso and they were serviceable in warding off the Texas sun. ZeroUV send these shades out with a microfiber carrying pouch which was nice, as I can both clean them and store them. The hinges on mine have stayed tight because I take care of them as if they were a pair of Raybans, which of course is the key to longevity. The build quality is alright, just keep your expectations modest because these were not built to have a long shelf life. Take it for what it is, a cheap pair that you'll most likely have to replace after a few months.
Stop whining about the lens. They're big and like any cheap pair of sunglasses they are prone to scratches and scuffs. Don't be that guy who gives a 2 star review because you were a dingleberry and dropped them on pavement. Which I've done a million times, it happens.
Bottom line: It gets the job done. Give them a shot!