This pairing of a dark green raincoat and a crew-neck t-shirt looks put together and makes you look infinitely cooler. If you need to effortlessly up the style ante of your ensemble with one piece, why not complement your ensemble with a pair of dark brown leather chelsea boots? There's no better way to spice up a dreary autumn day than a killer ensemble like this one. This is a modern and age-appropriate ensemble for a 30-something gentleman.