Blackout Grade 1, Flame Retardant, 50 Size Curtains (Palette 2 Warm Gray 100X200 x 2 Used for several months. Please only purchase if you understand that this is a used item. I will fold them as compactly as possible for shipping, so please understand that there may be creases. Blackout Grade 1, Light Blocking Rate 99.99% or higher (Blackout level according to JIS standards. There are blackout grades 1-3, with grade 1 having the highest light blocking rate.) Blackout Level 3 (Blackout level according to Nitori standards. There are 5 levels from 1-5, with higher numbers indicating less light penetration.) Shape memory processing that keeps pleats beautiful even after washing. Flame Retardant Processing: Treated to be flame-resistant, meeting the "Flame Retardant Performance Standards" set by the Fire Service Act. Machine washable at home.