Sunglasses lead a busier life than any other eyewear. On the face, pushed up into the hair, hooked on a shirt, folded on a café table: they're seen from every side, all day long. So every detail counts.

In the sun, the lens is half the colour. At RES / REI it's never an afterthought: a shape we draw, an acetate we develop for it, a tint we compose to match. Three decisions, one frame.