If you feel more confident wearing something comfortable, you'll appreciate this dapper pairing of a mustard short sleeve shirt and a crew-neck t-shirt. If you need to effortlessly perk up this outfit with one single piece, add brown suede loafers to this outfit. The ease and functionality of this getup takes care of the heat and helps you make a ravishing statement wherever you go. A no-brainer for 30-something guys looking for a more professional look.