This combo of a grey crew-neck t-shirt and charcoal jeans is super easy to assemble and so comfortable to work from dawn till dusk as well! Break up your getup by slipping into a pair of tan leather double monks. As you can see, it's extremely easy to look on-trend and stay comfortable when cooler weather arrives, thanks to this ensemble. Rock this outfit to pull together a more conservative look as a gentleman in his twenties.