These are interesting looking sunglasses, well-suited for hikers and the like.  Because of the large lenses and the slightly curved shape at the top of the frames, you get excellent coverage from the sun.  They are also a bit darker than most other shades.  My first reaction was that they looked a bit cheap because of the flexible plastic construction, but I came to see that the design was functional.  They should fit well with most sized faces (though the lenses could look big if you have a small face).  At $40 they're not cheap and you're probably paying a bit for the name; however, if you're looking for a brand that will provide excellent sun coverage/protection, these could be a good choice.  You could probably also use these for skiing.  I think they're best suited for very bright conditions.  I went with the green ones and they look pretty cool.