Keira Cat-Eye Acetate Polarized Sunglasses. Sharp lines add a little edge to these timeless cat-eye sunglasses, now featuring new polarized lenses. Crafted with durable Italian-made Mazzucchelli acetate, best-in-class OBE hinges, and outfitted with polarized OM15-CR39 ZEISS lenses, they boast quality construction that’s built to last.