If the situation permits an off-duty outfit, opt for a white v-neck t-shirt and navy jeans. Don't know how to finish this look? Wear white canvas slip-on sneakers to step up the fashion factor. Keep this combo in your front hall wardrobe when spring sets it, and rest assured, you'll save a ton of time trying to pick out a look on more than one morning. All in all, a great demonstration of casual fashion for mature guys.