These Joydeco blackout curtains are crafted from high-quality, 100% Polyester microfiber. They are durable, naturally wrinkle-resistant, and machine washable. The curtains feature triple-weave technology for professional-grade light blocking, with dark colors blocking 85%-99% of sunlight and light colors blocking 65%-80%. This creates ideal darkness for sleep and helps regulate room temperature, reducing energy costs. The dense fabric construction effectively absorbs over 35% of outside noise, making them ideal for light sleepers and creating peaceful environments. Each panel has 8 silver grommets with a 1.6" inner diameter for easy installation on most standard and decorative curtain rods. They arrive thread-trimmed and wrinkle-free.