About this item: Multiple Protection: Polyester fiber (polyester), not only blocks harmful sunlight, rays and heat. High density woven fabric feels silky, looks line-free and provides better blackout effect. The outdoor curtains are heavy enough to have a nice vertical but light enough to blow in a normal breeze, preventing the outside world from intruding on your private moments so you can enjoy maximum privacy with your family members and friends. Elegant Decor: Blackout curtains can withstand the outdoor weather elements well and are fade resistant. Both sides of the curtains are made of the same material and color