To put together a casual ensemble with a modern spin, you can easily rock a gilet and a crew-neck t-shirt. Black leather chelsea boots will put a more refined spin on your ensemble. Keep this combo in your front hall wardrobe come warmer weather, and we guarantee you'll save a lot of time racking your brain for an outfit on more than one occasion. As you're heading into your 30s, you want to start dressing more like a mature gentleman. In this case, getups like this are a winning option.