The best insulated curtains are made with high quality polyester fiber. Insulated curtains can be used in winter. The back side comes with acrylic suede lining which can effectively insulate 70% heat. As blackout curtains, 98% light source can be blocked.Navy blue, pale blue, grey, coffee, khaki, beige available. We can customize any size to fit your Patio, Beach, Corridor, Party, Window, Porch, Pergola, Garden, Gazebo, Pavilion. Three header types: grommet top, grommet top & bottom, tab top.