Putting together a charcoal double breasted blazer and dress pants will be a good exhibition of your sartorial skills. White and black leather low top sneakers will bring a more casual feel to an otherwise dressy ensemble. Entirely appropriate for hot weather, you can work this getup throughout the summer season. As you're going from your 20s to your 30s, you probably want to start dressing maturely. In this case, getups like this are perfect as inspiration.