tested and when I say is the truth;) I found a website that verifies colorimetry this pair of glasses and passed the test. Moreover they are light. The negative points ": appearance "quality" of the frame - without defect or weakness and glasses that seem susceptible to scratches.
Little more commercial, a small gift was hidden in the package. Nothing amazing but for the price this is a nice little attention.
Otherwise I recommend especially the "hyperstereos" that are impressive, I found a well-known site photography: Fli..r