Polyester.[ Blackout] blackout curtains are double layered with liner on the back. The innovative double woven textured fabric can block out entirely sunlight and harmful UV ray (deep colors work better), keeping room cooler against heat in summer and retaining the room warm in winter..[Grommet Design]The curtains are designed with Grommets. Grommet design is a modern and fashionable curtain style suitable for various living and office environments. This design adds a metal ring at the top of the curtain to make it easier to slide and distribute the weight of the curtain fabric evenly..[Packaging Specifications]Each package contains 2 black out curtains panels. Each panel measures 52"W x 96"L | Pair measures 104"W x 96"L..[Faux Linen Material]The fabric of curtain is polyester fiber, which has the characteristics of high strength, wear resistance and tear resistance. This fiber fabric also has excellent anti pollution performance and is easy to clean and maintain. In addition, curtain also uses the appearance design of flax texture to make its appearance more elegant and natural..[Thermal Insulating] blackout curtain has excellent thermal insulation properties. It is made of high-quality materials, which effectively insulates the cold air and heat outside keeps the indoor warm and comfortable.