This combination of a grey shawl cardigan and navy jeans is the ultimate casual look for any gent. When it comes to footwear, this look is complemented nicely with dark brown leather casual boots. During the colder months, when warmth is the priority, it can be easy to settle for a less-than-stylish ensemble in the name of functionality. However, this ensemble is a good illustration that you can actually stay snug and remain stylish in the colder months.