For an ensemble that's very easy but can be dressed up or down in a myriad of different ways, reach for a cardigan and a white and black crew-neck sweater. Aquamarine suede loafers will inject an added dose of class into an otherwise standard getup. As you can see, this combination is a really smart idea, especially for summer-to-fall weather, when the temperatures are dipping. Certainly a nice option if we're talking outfit ideas for men in their forties.