BY FAR Prudence flats redefine minimalist chic. Supple creased lambskin forms to the foot, yielding a glove-like fit with each step. A central seam detail on the vamp adds subtle interest to the sleek silhouette. The barely-there stacked heel with a rubber injection makes it easy to wear all day. With its soft suede lining and smooth nubuck sole, this ballet flat is an effortless choice.