A dark green military jacket and beige chinos are absolute menswear must-haves if you're figuring out a casual wardrobe that holds to the highest sartorial standards. Play up the dressiness of your ensemble a bit by sporting a pair of dark brown suede loafers. As you're transitioning from a kid to a teen guy, you probably want to start dressing more like a grown-up. If that's the case, inspiration like this comes in very handy.