Four pairs of sneakers are lined up, all nearly identical at first glance: Paul Smith Levon trainers, Reebok Club C 85s and two pairs of Common Projects—the Bball Low and the inimitable Achilles low. All clean white, photographed in a neat row against a white sweep. "Spring and Summer sneakers," the Instagram caption says. Most people would pick one. To @ScandinavianCloset, its 24 thousand followers and all other observers of a certain kind of Nordic-inspired minimalism, the differences are stratospheric; of course the leather panels on the Bball low separate them enough from the clean lines of the pared-down Achilles to make both indispensable. When your outfit is reduced to the absolute basics, you tend to notice the small things.

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