The best curtain fabric for blocking sunlight is blackout fabric, which is specially designed to prevent light from passing through. At ComfyMart, we offer a variety of high-quality blackout curtains made from tightly woven polyester or triple-weave materials that can block up to 95–100% of sunlight. These curtains are perfect for bedrooms, media rooms, or any space where you want to reduce glare and create a darker, more restful environment. Another excellent option is velvet, a thick and luxurious fabric that naturally absorbs light due to its dense texture, while also adding a rich, elegant look to your living space. For those who prefer a more natural feel, linen or cotton-blend curtains with an added blackout lining combine style with functionality, offering a soft appearance while still effectively blocking sunlight. Thermal curtains, which use a triple-weave technology, are also highly effective; they not only block light but also help regulate room temperature by insulating against heat and cold. Additionally, fabrics like heavy jacquard or thick cotton can be used with a separate lining to reduce light infiltration. Whether you’re aiming for total darkness or simply want to cut down the harsh afternoon sun, ComfyMart provides customizable curtain designs for living rooms that match your interior style while delivering exceptional sun protection.