Showcase that no-one does smart casual menswear quite like you do by opting for a yellow overcoat and olive chinos. Rounding off with dark green athletic shoes is an easy way to inject a fun touch into your getup. During the colder months, when warmth is critical, it can be easy to settle for a less-than-stylish ensemble. This ensemble, however, is a stark illustration that you totally can stay toasty and remain equally stylish during the colder months. Interested in outfit ideas for 30-year-old gentlemen? This getup is great inspo.