A white long sleeve shirt and beige cargo pants are the perfect way to inject played down dapperness into your casual wardrobe. And if you wish to easily play down your outfit with one piece, throw a pair of brown suede high top sneakers in the mix. As you can see, it's very easy to look amazing and stay toasty when cooler days are here, thanks to this look. And if we're talking casual style tips for 30-year-old gentlemen, this getup is ideal.