SUMMER ESSENTIAL:Block light and heat helping on room cooling.Save ac fee with these energy efficient thermal insulated window coverings shades. WATERPROOF:Made of water resistant fabric,durable for kitchen and bathroom window. PRIVACY:Short Blackout-curtains for well sleeping.Pls note dark colors work better.Light colored such as white is 80-85% blackout and dark colors keeps nearly complete total 100% black-out. Pack:Pair set of 2 pieces.Silver metal grommet top for silk like sliding.6 grommets each panel. EASY CARE:Machine washable.Tumble dry low.No Bleach.Iron with medium temperature if wrinkled from package.