We're loving how this semi-casual combination of a grey shawl cardigan and dark green chinos immediately makes you look on-trend. For a more relaxed feel, introduce a pair of brown suede work boots to the equation. Can you see how super easy it is to look on-trend and stay cozy when colder weather comes, all thanks to looks like this one? All in all, a great example of relaxed casual fashion for 30-something gentlemen.