A black and white crew-neck t-shirt and black jeans matched together are a smart match. Take this outfit a dressier path with slip-on sneakers. This combination is a viable idea when it comes to planning a well-coordinated outfit for unpredictable fall weather. As you're approaching your 30s, you probably want to start dressing more like a mature gentleman. If that's the case, ensembles like this come in very useful.