A dark green blazer and a turtleneck worn together are a sartorial dream for gentlemen who appreciate casually elegant styles. Get a bit experimental when it comes to footwear and introduce dark brown leather desert boots to the mix. Can you see how extremely easy it is to look on-trend and stay cozy come colder weather, thanks to this ensemble? Those who are curious how to sport semi-casual looks as you make your way through your 20s, this ensemble should answer your question.