This relaxed casual combination of a black long sleeve t-shirt and black skinny jeans is super easy to throw together in no time flat, helping you look awesome and ready for anything without spending a ton of time digging through your wardrobe. If you wish to instantly class up your look with a pair of shoes, why not add a pair of dark brown leather chelsea boots to this ensemble? Overall, a great example of casual fashion for 30-something Millennial men.