Perfect the laid-back and cool ensemble by opting for a black crew-neck sweater and navy jeans. For something more on the smart end to finish off this ensemble, complement your ensemble with black leather casual boots. Piecing together a standout look can be a bit challenging on its own. Enter subzero temperatures into the equation, and the whole thing becomes even more difficult. Fear not, this here is your wintry fashion inspiration. If you want to portray maturity and professionalism as a man in his twenties, a look like this is a winning option.