A grey crew-neck t-shirt and white jeans are true menswear essentials if you're piecing together a casual closet that holds to the highest sartorial standards. Clueless about how to complete your ensemble? Rock black leather derby shoes to lift it up. There are many ways to look neat and live through the heatwave, and this here is one of them. An ensemble like this can make any mature guy look better than any of his peers.