This casual pairing of a grey tweed blazer and blue skinny jeans is super easy to put together without a second thought, helping you look awesome and prepared for anything without spending a ton of time rummaging through your closet. Channel your inner David Beckham and lift up your getup with dark brown leather dress boots. As you can see here, this combo is a really smart pick, especially for in-between weather, when the temps are dipping. Overall, a perfect demonstration of smart casual fashion for 30-something Millennial gents.