This casual combination of a double breasted blazer and a crew-neck t-shirt is extremely easy to put together without a second thought, helping you look stylish and ready for anything without spending a ton of time searching through your closet. For something more on the smart side to finish off your getup, complete this outfit with a pair of black suede chelsea boots. This pairing should prompt anyone who was skeptical about sporting casual outfits as a mature gent.