brown lenses actually give you the best vision acuity. it is a compromise from the yellow lenses used for shooting & night driving. expensive.? my revos cost $200. wich i consider an investment for how much i wear sunglasses- my eyes are light sensitive(thx dad) & we have a lot of sun up here. the kicker is, my wife tried them & liked them so much i had to buy here a pair. those were $250.- $$ that are part of my comp fund. grumble.