A classically smart business trouser, the Windsor is an excellent choice. Understated and stylish, it has a versatile slim fit and a dark navy hue that will complement a variety of separates.
There are plenty of traditional tailored details, including pleated front.
The plain navy shade works with a wide range of colours and textures. Wear it with a crisp white button-down and blue striped tie for a formal look. Alternatively, add some contrast with a paisley or floral Liberty print shirt.