Glasses quality surpass expectations. They last for a very long time. I have ordered with KZFOO for a few years now because I am able to customize my glasses exactly how I want them and they’re a fraction of the cost at my optometrist. Also I have siblings that somehow manage to break every.single.pair of glasses they own, especially because they’re in sports, so I always order from KZFOO to have backups and it doesn’t break the bank. Also, shipping is so fast! From the moment I put the order in, exactly one week later the glasses were delivered! We are absolutely thrilled with KZFOO. Thank you!