A white and red long sleeve t-shirt and black skinny jeans are essential in any guy's functional off-duty wardrobe. Brown leather derby shoes are guaranteed to inject an added touch of style into your getup. So if it's a warm weather afternoon and you want to look sharp without putting in too much work, this ensemble will do the job in no time flat. The ability to pull off looks like this is one of the advantages of maturing into your 30s.