Prove everyone that you know a thing or two about menswear in an olive fleece zip sweater and brown corduroy chinos. When this outfit appears all-too-polished, tone it down by rocking a pair of black athletic shoes. Keep this ensemble in your front hall wardrobe when spring sets it, and rest assured, you'll save a ton of time planning a look on more than one occasion. This combination demonstrates how to remain fashionable in your 30s.