A black crew-neck sweater and white cargo pants are absolute menswear must-haves that will integrate really well within your casual styling collection. You know how to dress up this look: black leather derby shoes. So as you can see here, it's a cool, not to mention spring-friendly, getup to have in your transeasonal rotation. This pairing proves that as a gentleman in his forties, you have a vast array of sartorial options.