A grey wool blazer and charcoal cargo pants make for the ultimate casual style for any modern gentleman. Rounding off with brown leather monks is a guaranteed way to give a hint of polish to your outfit. In winter, when comfort is crucial, it can be easy to settle for a less-than-stylish ensemble. This ensemble, however, proves that you can actually stay toasty and remain stylish in winter. So if you're looking for a modern and mature getup for a 20-something, this is it.