Most luxury eyewear identifies itself with a temple logo, which is a solved problem and a slightly lazy one. The approach here is to build recognition into the outline: angular geometric fronts, exaggerated cat-eye lifts and unusually slim profiles that do not look like anyone else's. That is riskier, because a shape either suits a face or does not, and a logo suits everyone. It descends from the house's leather goods thinking, where the Puzzle and the Flamenco are identifiable purely by construction. The Paula's Ibiza line adds the one place where colour takes over from shape.

Signature black geometric sunglasses at 53mm and slim geometric at 54mm are the most architectural pieces. Coil cat-eye acetate, in plain and tortoiseshell, lifts sharply at the outer corner and is the most dramatic silhouette here. Double frame cat-eye at 67mm is the largest of these loewe sunglasses and the boldest. The D-frame acetate and Oval Slim oval-frame are the quietest options, and the Paula's Ibiza geometric at 56mm is the most colourful.

Acetate frames can be heat-adjusted by any optician, which means a frame that pinches at the temple is fixable rather than wrong, and almost nobody knows this. Very large frames slide down the nose regardless of fit unless they have adjustable pads, which most acetate designs do not. Tortoiseshell hides scratches better than any solid colour, which matters on a frame you throw in a bag. Slim profiles are lighter and considerably easier to snap. If you take one thing away, get any acetate frame adjusted after buying, because it takes five minutes and transforms the fit.