Some of the systems developed within Safilo's workshop are patented machinery to construct a particularly flexible hinge, for example.

ECONOMIST: The complications of clustering

More often, the engineers modify standard machines that Safilo buys from outside.

ECONOMIST: The complications of clustering

And Gap's high-end line, Banana Republic, has signed a five-year deal with Safilo Group, an Italian luxury-eyewear firm, to sell Banana Republic-branded frames and sunglasses in Safilo's Solstice stores, other retailers and possibly in department stores, too.

ECONOMIST: Retailing