Pairing a white and blue blazer with jeans is an awesome option for a casually neat getup. Let your sartorial credentials really shine by rounding off your ensemble with a pair of dark brown suede tassel loafers. This combination is a tested option if you're after a great, summer-friendly combination. As a guy in his 30s, you probably want to start dressing in a more elegant manner. In this case, combos like this are ideal as inspiration.