A charcoal crew-neck sweater and a black crew-neck t-shirt are the kind of a no-brainer casual outfit that you so terribly need when you have no time. Give an elegant twist to your ensemble by slipping into beige suede chelsea boots. There's no nicer way to cheer up a bleak fall afternoon than a cool outfit like this one. A no-brainer combination appropriate for 20-something gentlemen who prefer casual dressing.