The trench coat has survived because it solves a real problem. It is light enough for early fall, water resistant enough for a downpour, and structured enough to make any outfit look finished. The classic details are still the ones worth looking for, a storm flap across the shoulder, a belt you can tie or leave hanging, a double breasted front and a collar that stands up when the wind picks up. Fabric is where you feel the difference. A tightly woven cotton twill sheds water and holds its shape, while a softer blend drapes more loosely and feels more relaxed. Length changes the mood. A knee length trench is the most traditional, a longer one feels dramatic and cozy, and a shorter jacket version pairs well with wide trousers. Stone, khaki and sand are the familiar shades, but olive, black and deep brown all feel current and go with almost everything you own.

The beauty of a trench is how easily it slips over any outfit. Try it over a knit and straight jeans for a weekday look that feels put together without effort. Over a slip skirt and boots it turns dressy, and over a tailored suit it adds a layer that suits the office. Tying the belt at the back gives a relaxed, slightly undone shape, while cinching it at the waist builds a more defined silhouette. Roll the sleeves slightly to show a cuff or a bracelet. For rainy days, choose flat waterproof boots or lug soled loafers, and carry a bag that can handle a little weather. In colder months, layer a thin scarf or a chunky knit underneath, but avoid anything so bulky that the coat cannot close properly. A good trench looks better with a little wear, so do not worry about a few creases. They add character and show it is a coat that gets used.