This collection by Thermavoile™ from the ThermaLogic family, will elegantly frame your windows with its beautiful iridescent look, adding a touch of class to your decor while toning down the light and cutting glare. The lining on this room-darkening curtain acts as a thermal barrier between the curtain and your window. Designed to insulate against temperature variations, block some light, give you daytime and nighttime privacy, dampen sound, and provide UV protection. Made of long-lasting quality materials. Rhapsody Thermavoile 'lined' panels are a European style of a high twist Voile. For proper fullness, panels should be 2-3 times the width of your window.