You'll be amazed at how super easy it is for any gent to pull together this relaxed casual look. Just a black wool shirt jacket and a white crew-neck t-shirt. For something more on the smart end to complement this ensemble, add dark brown leather loafers to this outfit. This combination is a savvy pick if you're putting together a standout outfit for transitional weather. Rock this combo to uphold a more mature image even as a gentleman in his 20s.