This classic and casual combination of a grey overcoat and light blue jeans is very easy to throw together in no time flat, helping you look amazing and prepared for anything without spending a ton of time searching through your closet. Add a dressed-down feel to with a pair of brown suede desert boots. An amazing example of functional fashion, this look must be in your front hall closet this winter. As a 30-something Millennial gent, you probably want to start dressing like an adult. That's when combinations like this are a solid bet.