For instance, all sun lenses are Zeiss, the world leader in optics products. These lenses further add to the premium quality across all styles and marked by a discreet ‘Z’. Additional design signatures include lightweight and durable titanium temples as well as nose pads, for functionality along with style. Created using only the best materials there is to offer, some models also feature premium Japanese acetate. For some subtle charm in true Hackett fashion, this bespoke range also bears the signature engraved “JPH” initials.