The fabric isn't effective at room darkening. You'll need a good solid window shade to go with them to really do the trick. Also, the workmanship is of poor quality. The stitching is puckered and so they tend to 'puff' or flare out. The fabric is also lighter and stiffer than other room darkening curtains I've purchased (two). They don't have a good "draping" quality. In other words, they don't hang with enough weight to have that nice curtain effect, but instead, flare out at the bottom. They *are* really pretty, though.