100% Polyester \nHow to order: Each cellular shade is produced at the exact size your order. To order inside mount shades, it is important you order the shade width 1/4" - 3/8” smaller than the actual window width. To order an outside mount, you can just order the size that covers the area you want to cover. Please refer to the how to measure and how to order illustrations. \nBlindsAvenue cellular shades are made of spun lace, non-woven fabric. 100% polyester. They are available in light filtering and blackout fabrics. Regular cordless shades and top-down bottom-up shades. \nBlindsAvenue cellular cordless operation allows you to not have to order the exact length of your window. For windows less than 48" tall order the 48" height. For windows between 48" tall and 72" tall order the 72" length, you just simply lower the shade to the desired length. \nBlindsAvenue Cellular shades help save you money all year on your energy bills. Stay cooler in the summer and warmer in the winter.