Why They're CoolThis handsome three-lens wrap may be all you'll ever needfrom above treeline to surfaces hard, soft, and man-made. » The darkest of the swap-out poly lenses are polarized gray. For less searing conditions, there's brown. My fave is an almost-clear orange that pops details out of the murk. » There's plenty of protection and security here.Hmmm . . .A lens change means a lens cleaningsnapping in and out leaves thumbprints.RX-ABLE?Yes.