I've worn these glasses every day for 5 days, and so far, so great.  I have a narrow face and need glasses with enough "hug" to stay securely in place; these are perfect.  The bifocal "reader" area is in exactly the right location.  My distant vision is perfect and all I have to do is glance down to comfortably read even small print (I use the 1.5 strength).  They fit comfortably on my nose and I almost forget I'm wearing them.  I can see how they could break if I didn't take care when I'm not wearing them so I'm being ultra-cautious.  They far exceed my expectations --  especially considering the super low price.  I am extremely pleased with this purchase!