Havana brown acetate tortoiseshell-effect aviator-frame sunglasses from STELLA MCCARTNEY EYEWEAR featuring tortoiseshell effect, UV-protective lenses, brown tinted lenses, aviator frame, logo-embossed arm, oversize arms and curved tips. We know you'll look after them, but these glasses come with protection, just in case.. POSITIVELY CONSCIOUS: We’ve joined forces with ethical agency Good On You to give you the power to choose positively. This piece is from a brand that scores well on their key criteria..