The short-sleeve henley is a nice middle ground kind of piece—not as casual as a typical tee but not as preppy as a polo shirt. It's a hybrid of sorts. A garment that revels in the details and elevates your off-duty kit. It's the kind of piece that you can easily wear by itself right now when the temperature's blazing and then layer under a light jacket or denim shirt as fall weather approaches. Look for styles cut from soft, quality fabrics in simple colors and finished with smart details like vintage-inspired fisheye buttons or raglan sleeves. Then wear the hell out of it because it pretty much pairs with everything in your wardrobe.