A duck down vest, also called a gilet, is a sleeveless insulated layer that keeps the core warm while leaving the arms completely free to move. Duck Apparel makes them in two lengths in South Africa, a hip length Classic Gilet in colours including Sage, Chai, Vista and Midnight, and a Longline Gilet in Sage, Midnight and Chai. This page explains when a vest works better than a jacket, how the two lengths differ, and how to layer one through the year so it gets worn well beyond the coldest weeks.