Just wanted a cheap pair of glasses to wear whilst travelling to work. I wasn't expect any miracles, but these broke after just 2 days of the most minimum of wear and tear (I was looking after them and not putting them in my pocket/bag etc). I suspect the rim must have been defective/cracked before I even put them on for the first time, but I didn't think to check that. My advice - steer well clear and go for a slightly more expensive (and non-plastic rimmed) pair. If I could give this product zero stars - I would.