Superior blackout curtain panels are made of 100 percent high-quality polyester, to revert any kind of dust or mites. Our blackout curtains block 75% to 85% of the light to create a peaceful darkening effect perfect for bedrooms, nurseries, kids' rooms, photographers' dark rooms, TV/media rooms, and any space where you require low light. These panels block light and heat from windows that get the strong sun, and help prevent premature aging and fading of your home furnishings.Special attention is given to stitching ensuring all seams are nice and straight, no loose threads and uneven hems/edges. The top hem measures 9.5 cm, the bottom hem measures 5 cm and the side hem measures 2.5 cm each. Grommets: Each curtain panel has 8 polished stainless and rust-free grommets. The grommets holes are very sturdy and large enough making it easy to move the curtain along the rods with Interior diameter at about 1.6 inches and exterior diameter at about 2.4 inches.We offer 4 popular sizes; 52"x63", 52"x84", 52"x96", 52"x108" each in a pair to cover your versatile window treatment needs. The length is measured from the very top of the curtain to the bottom of the curtain. Measuring for width: Please measure the curtain pole or track and NOT the window. For Grommet curtains, we recommend two to two and half times fullness. Always allow for overlap of 1'' to 3'' allowing the curtains to close together helping prevent light when closed.Safe & Eco-friendly: These panels also avoid causing any allergies due to its high-quality medium weight smooth polyester fabric ensuring long-lasting, high-quality performance.Care Instructions: The polyester curtain panels are easily machine washable. They are fade, wrinkle and shrink resistant. Wash Cold, Gentle cycle, tumble dry low, do not bleach, warm iron when needed.