Curtains have an interesting, swappable (hang either way) design. That said, they're not really "light-blocking," any more than other (apart from sheer) curtains). I contrast this with (other brand "light-blocking") curtains I have, and they truly live up to that label. In other words, these curtains are not opaque, and will allow at least some outside light through. However, if aesthetics are only concern, it's a reasonably cheap purchase.See full review