Room-darkening curtains are a key ingredient to any home: They provide a dark, peaceful bedroom environment for mid-day naps and are great for offering privacy where you need it most.Take this single curtain panel, for example: Its velvet fabric is crafted from polyester and features a semi-room-darkening design that's made to keep heat indoors, making it a great option for cold climates and nosy neighbors. Arriving with a liner included so that you can save a trip to the store, this piece also has a built-in rod pocket header that promotes quick and easy hanging. Something to consider: You'll need to buy the curtain rod separately, but we have plenty to choose from. And when it comes to upkeep, we recommend bringing it to the dry cleaner when it needs a complete refresh.