High end thermal fleece curtain linings. Crafted from imported 100 percent premium quality fleece (polyester composition). 2 panels per package to retro fit with any existing ready-made curtains. Thermal fleece linings will help on reducing energy bills by keeping light out and cool homes during hot summers and keeping the cold out during the winter months. Each pair of Thermal Fleece linings are easy to install behind existing curtains by using the bonus hooks included, this makes regular curtains into thermal curtains by using the linings. These linings will fit pencil pleat and eyelet curtains. Machine washable. Wash below 30 degrees. Do not bleach or tumble dry. Should be ironed at low temperatures. Features a lightweight soft touch, therefore existing tracks and poles need not be changed. Houses lose up to 20% of their heat through windows. With thermal fleece curtain linings, you will use less energy on air conditioning and heaters. They regulate the temperature by blocking out heat during hot days and keeping heat in during cold days.