Ultimate Liner Is a solid 80% Polyester/20% Cotton fabric with a triple pass 44% Rayon/56% Cotton foam backing which creates the “100% Blackout” liner quality. This washable Blackout impedes 100% of the light. Saves on your energy bill by reducing the drafts during the winter and keeping hot air out during the summer. One can get a more restful sleep, day or night, thanks to darker sleeping areas. Enjoy more peace and quiet. Give your eyes a rest by eliminating reflections on computer and tv screens. Protect your carpets, furniture and keepsakes from sun fading. These washable panels are sold as eaches (45-inches wide), available in five (5) lengths.The multi-purpose heading can fit under a Grommet Top Panel, Pinch Pleat Drapes, Tab Top Panel and even a Tailored Panel. Easy care, machine washable. Don't forget to check the Curtain Buying Guide