I purchased these at a local sporting goods store and absolutely love them.  I was replacing another pair of Maui Jims sunglasses that I dropped and shattered the lens on a large rock.  After having a ton of designer and not so designer glasses over the years I've grown to appreciate lens quality a great deal.  After wearing the Maui Jims sunglasses for just a small time in the store, and comparing them to every other quality sunglass maker, it was clear that Maui Jims stands in a class apart.

Now about these specific glasses.  They are feather light, you can hardly even feel them on your face when you wear them.  The lenses are top notch, as I explained above, and the construction looks to be solid.  Since they are frameless I was worried that they wouldn't last long, but after wiggling and bending them around they appear to be well made.  Only time will tell how well they will hold up to everyday use, and the line of work I'm in they will be put to the test.  The only thing that I could even possibly mark them down for is that you really can't put them on with one hand.  The nylon frames are designed to be flexible, light weight, and strong.  Because they are so light weight and flexable they are nearly impossible to put on with only one hand.  This may sound a bit trite, but I didn't realize how much I always put on my sunglasses with one hand and now I couldn't.  Again, this is very minor and it's part of the design of the glasses, a trade off if you will, that you must accept to get the benefit of feather weight glasses (and this bonus blows away being able to put them on with one hand).

The size of the lenses are probably for people who like a bit bigger wraparound style, I prefer a medium wraparound style and these are perfect.  They have other versions of this light weight nylon frameless style that have smaller and differently shaped lenses.  Overall these are by far the best pair of sunglasses I've owned.