A scarf is one of the easiest things in a wardrobe to wear badly and one of the simplest to wear well, once you understand that the fabric does most of the work. In fine cashmere it drapes. In silk it catches the light. In merino it holds warmth without bulk. These are scarves from Amanda Christensen, Fox Brothers, Altea, and others who take the small things seriously: in solids, stripes, and patterns that work with a great deal more than you might expect. Fold it. Drape it. Tuck it inside the collar. Leave the rest to the cloth.