100% European flax. To effectively filter light without blocking it entirely, the following colors are cotton lined: White, Natural Flax, Midnight, Adobe Rose, Dark Olive, Pearl Gray. The following colors are unlined: Dark Flax, Celadon, Marina Blue, Olive Melange, Terracotta Melange. Must be hung with curtain rings; compatible with our Round Metal Curtain Rings and Double Loop Curtain Rings. Various lengths, all sizes 48"w. Opaque fabric blocks most light and helps insulate windows. Imagery reflects opacity of curtain when exposed to direct sunlight. Coordinates with West Elm window hardware (sold separately). Made in a Fair Trade Certified™ factory, empowering workers who made it. Crafted in Cambodia (unlined, mélange colors) and Vietnam (cotton lined, solid colors).