Aeron outerwear is cut with clean shoulders and considered volume, so it layers easily over slim knits from brands like The Row or Jil Sander and heavier ribbed pieces. Short coats and silk-blend styles sit neatly over high-waist trousers and dresses without overwhelming the silhouette. Choose your usual size if you wear light layers, or size up if you intend to stack thicker sweaters underneath. The neutral palette slots well into an existing designer wardrobe.