"100% Blackout : Joydeco blackout curtains are double layered with grey lining on the back. The innovative double-woven textured fabric can completely block 100% sunlight and harmful UV ray (deep colors work better), keeping the room cooler against warmth in summer and keeping the room warm in winter. Bar pocket and back flap design for easy installation. Each package includes 2 black curtain panels. Each panel measures 52"" W x 38"" L - The pair measures 100"" W x 96"" L. Faux linen material: bedroom curtains are made of faux linen structure with a very dense workmanship. Blackout shades are not only thick, but also comfortable and draping. Our curtains provide good noise reduction and protect home privacy. Thermal Insulating: The insulating thermal function of these panel drapes traps heat and cold during the extreme seasons, making your home the perfect cozy nest at any time."