This smart pairing of a charcoal crew-neck sweater and brown herringbone dress pants is extremely easy to put together in no time flat, helping you look dapper and ready for anything without spending too much time digging through your wardrobe. If you need to immediately dress down your look with one single item, why not introduce a pair of slip-on sneakers to the mix? Smart outfits for 20-something gents aren't actually that hard, as you can see.