Try pairing a dark green barn jacket with a turtleneck if you wish to look casually dapper without exerting much effort. Why not take a classier approach with shoes and throw in black leather derby shoes? This is a foolproof option for a knockout look that will take you from winter to spring. As a gent in his thirties, you probably want to start dressing maturely. In this case, outfits like this are perfect as inspiration.
A dark green barn jacket looks so good when paired with a turtleneck in a casual outfit. And if you wish to instantly dial down this look with a pair of shoes, why not round off with a pair of tobacco leather snow boots? So so as you can see, it's an on-trend, not to mention season-appropriate, outfit to have in your seasonal rotation. Casual outfits for stylish gentlemen in their 30s aren't actually that hard, as you can see here.
When the situation allows an off-duty getup, go for a dark green barn jacket and a turtleneck. For a classier vibe, add black leather chelsea boots to the mix. This look is the definition of perfect for those snug days of spring. If you're over 30, take inspiration from combinations like this to take a more serious direction in your style.