Mine had one lens partially installed, and it was bent.
I was able to push the lens into the frames and it popped in, but not very easily and the lens looks warped now if you catch the light just right.
I was left with an overall feeling of them being really cheap and flimsy, considering the (discounted) price. It is hard to imagine paying more.
There was nothing wrong with my GF's glasses (she got a pair too) and I'm sorta jealous... but they still are really flimsy for the price.
If I'm honest with myself, the average $8.00 sun glasses at the gas station are at least on par with these. From a QC perspective too.
edit: I got yellow. my GF got purple.