Haz:

IF you wear a baseball style cap and want a cool flip-up option that is light weight and work GREAT; take a look at Brimz:

http://www.brimz.net/

I use the brown polarized and they even work great even over glasses if you need them. At $30 a pair they are priced right too. Because I often fish in places where sunglasses can make things too dark; I have always liked the flip-up option. The Brimz are great because IF you don't want them you just flip them up and out of the way.

Oh yea, you can't lose them unless you lose your hat!