These are decent for only $10.  The lenses are good quality. The frames are sturdy.  I've never worn a real pair of Ray Ban RB4089 Balorama sunglasses before, so I can't compare them to the real thing.  I do own a real pair of Ray Ban New Wayfarer sunglasses though.  The Dirty Harry's don't seem as sturdy, but they cost ten times less too.  I wanted to order the real thing, but my wife wouldn't go for spending over $100 on another pair of sunglasses.  I ordered these as a compromise.  My only complaint is the fit.  They fit kind of tight over my ears, so I took away 1 star.  I guess they're made for someone with a more narrow head?  At least they don't fall off or won't blow off in the wind.