A double breasted blazer and navy and green chinos are a combo that every modern man should have in his menswear collection. Give a fun touch to your getup by finishing with a pair of tan leather high top sneakers. When it's one of those bleak fall days, what better to cheer it up than a sharp look like this one? So if you're in search of a good-looking yet mature pairing for a man in his twenties, this one fits the task well.