Need proof that the fashion world is cyclical? The fact that esteemed eyewear brand Persol reintroduced clip-ons last year is all the evidence you should need. While traditionally synonymous with bad taste, the PO 3007 V and 3002 V frames make a strikingly good case for the design’s revival, especially considering their price and convenience for those in need of new eyeglasses anyway. Don’t get any bolder ideas about bringing things back, though. Dickeys are still verboten.