If the dress code calls for a casually stylish look, choose a tan crew-neck sweater and a dress shirt. You could perhaps get a bit experimental when it comes to shoes and play down your getup with black leather work boots. During winter, when warmth is imperative, it can be easy to surrender to a less-than-stylish getup in the name of functionality. But this getup is a striking illustration that you totally can stay cozy and remain stylish at the same time during winter. Certainly a wonderful idea when it comes to style for men in their 20s.