I was at the mall yesterday and I found a store that was down to their last pair of Blender 004059-13 and they had them 30% off. I liked them a lot. Just did not have cash at the time. So got paid and went though the bills and now I have enough for them. Kind of mixed on buying them. Like the deal and the glasses but still not a cheap pair. They look a lot like my tightropes 004040-02 and I did not have them when saw the Blenders. I am just wondering what difference between them. Know they have a different lens. Thanks for any help on make my decision.