This laid-back combination of a shearling jacket and a crew-neck t-shirt is perfect when you need to feel confident in your ensemble. Get a bit experimental on the shoe front and polish up your outfit by wearing a pair of black leather casual boots. If you're looking to keep warm during the cold months and look stylish while doing so, this getup is for you. Wondering how to nail casual style as you reach your 30s? This combination is the perfect answer.