I received these glasses and when I put them on, they were completely uneven on my face.  I'm no Brad Pitt, but I also don't have a completely misshapen head, either.  I inspected them more closely, and one arm was curved significantly, and the other was basically straight.  The result was an immediate return.  I didn't want to bother with exchanging them and possibly needing to send another pair back, so I can't say whether this was an isolated issue, or if their quality control is lacking, but I didn't have a positive experience with this product.  The style looked like it would be nice if they didn't sit askew on my head, so they do have that going for them...