COSTA - Aleta Taupe Crystal w/ Copper Silver Mirror Polarized Glass LensesInspired by the form and function of natures beauty, its no coincidence the Aleta sunglasses get their name from the Spanish word for fin. Offering water ready performance in a stylish yet functional design, Aleta uses lightweight Bio Resin and double injected Hydrolite for a better grip. And with micro shields and hooding, excess light stays out while fog stays down with vented nose pads. Wearing Aleta, youll see the smooth shape and refined lines