A white crew-neck sweater and a brown plaid flannel long sleeve shirt are among those game-changing menswear pieces that can completely change your closet. If you need to instantly elevate this ensemble with one single item, why not add a pair of brown suede loafers to your outfit? As a gentleman in his 30s, you want to start dressing like an adult. If that's the case, getups like this come in very useful.