Papitmg Cute Blue Birds Blackout Window Curtains Round Hole Style Living Room Or Bedroom Curtains Window Curtains Blackout Window Panels (Each Panel WH(98"98")2.52.5M, Chiffon) 100% polyester Round Hole Style curtains need to have wrinkles and for proper fullness, panels should measure 2-3 times the width of your window. 100% Polyester. Blocks 85-percent of light. Helps to reduce home heating and cooling costs. Sold as single panel.