You'll be amazed at how easy it is for any man to throw together this casually sleek getup. Just a grey overcoat worn with a black sweatshirt. To inject a more casual finish into this getup, introduce a pair of black leather high top sneakers to the mix. This outfit is a really savvy idea, especially for fall, when the temperatures are falling. Casual combinations for 20-year-olds aren't actually that hard, as you see.