If the setting allows a laid-back ensemble, try teaming a long sleeve shirt with sweatpants. A safe bet outfit appropriate for 30-year-olds who prefer casual clothing.
Long Sleeve Shirt with Sweatpants Cold Weather Outfits For Men In Their 30s
Here, the cool-kid casual style translates to a long sleeve shirt and sweatpants. If in doubt about what to wear in the footwear department, stick to beige leather low top sneakers. This getup proves that stepping into your 30s is no reason to stop dressing casually.
A long sleeve shirt looks especially nice when combined with sweatpants. Complete this ensemble with white leather low top sneakers and the whole outfit will come together. As you can see here, in your 30s your style options are looking great.