This ensemble with a burgundy turtleneck and a navy overcoat isn't so hard to pull off and easy to adapt. For something more on the classier end to finish your getup, throw double monks into the mix. That's the look for a guy in his 30s to convey you've got what it takes to succeed.
Burgundy Turtleneck with Double Monks Dressy Chill Weather Outfits In Their 30s
Marrying a burgundy turtleneck with a black overcoat is an awesome pick for a semi-casual outfit. And if you want to easily ramp up your getup with one item, complete your outfit with double monks. After 30, you want to start dressing with more sophistication. That's when inspo like this comes in useful.