A "lined", woven Jacquard with an overlapping irongate design. The lining gives the room darkening benefit, keeps the energy bill down by blocking the cold air from coming in during the winter and warm air in the summer. Helps eye strain by reducing the glare on computer monitors and TV screens. Protects carpets, furniture and keepsakes from sun fading. Blocks noise which allows you to enjoy more peace & quiet. The White backing meets condominium requirements. It is sold individually (54" wide) in two (2) lengths and four (4) colors. Easy care, machine washable. These are labeled under our successful "Thermalogic™" brand.