Different aspects meet and interpenetrate in Celine's sunglasses, including the men's model CL40225I in acetate, a hybrid between a subtly wrap-around frame and an aviator model with a large rim topped by a metal plate. Meanwhile, Belgian designer Dries van Noten's vintage-inspired DVN211 rewrites history with the use of layers emphasised by shiny acetate. Returning to the art world, Cutler and Gross is inspired by the round glasses worn by David Hockney, who was also a customer of the British brand. Perfect in its refined simplicity, the unisex model1396 (in the opening picture) resumes an ideal dialogue with a muse of post-modern art who has also become a style icon (especially for his glasses) and is available in both the sun and prescription versions. One concession to decoration: the compass eight-point star pins.

Moving from acetate to other materials, black takes on different depths, shades and reflections, as in the case of Blackfin's extremely light and airy titanium models, including Zen, an example of a virtuous synthesis of form and material, creativity and technology. It is no coincidence that a model from the Italian brand (the Ventura model, for the record) was worn by actor Sean Penn during his recent visit to Poland. Another brand, another muse, this time from the animal world. Having become a fashion icon in spite of herself, Choupette is one of the most famous cats in the world because she belonged to the designer Karl Lagerfeld, who often took her out with him. The KL329S cat-eye model is clearly inspired by the adored and pampered Burmese cat, with open lenses crossed and supported by a thin and elaborate metal frame. In black. Naturally.