This is the 5th or 6th pair of Blublocker sunglasses I've owned.  I don't wear anything else if I have them with me.  They are nice looking, light weight and provide a very sharp image of everything you view.  The only downside is that the frames tend to be a little brittle and will break with any great amount of pressure on them, but at this price they are easy and inexpensive to replace.