Please feel free to ask any questions in the comments. Hansleep Curtains, 1st Grade Blackout, Set of 2, Width 150cm x Length 230cm, Brown, Thermal Insulation, Cold Protection, Soundproof, Energy Saving, Thick, Plain, Stylish, Washable, for Living Room (Brown, Width 150cm x Length 230cm) ◆【First Grade Blackout】These curtains have a blackout rating of 99.99% or more, blocking almost all light from the outside, making the room dark enough that you can't see the expression on someone's face when the curtains are closed during the day. Even with the same grade, the degree of blackout varies depending on the brightness and color of the curtains. Light, pale colors tend to let light through, while dark colors tend to block light. We recommend dark colors for those who prioritize blackout. ◆【About the Fabric】These curtains are made of 100% polyester fabric. They are thick and have a soft, smooth texture with a matte finish. They are highly functional with first-grade blackout, heat insulation, thermal insulation, and soundproofing. The front and back of the fabric are the same color, making them easy to use as a room divider. ◆【Suitable for All Seasons】Blackout curtains have the significant advantage of being difficult for heat and cold to pass through due to the high density of the fabric. They prevent the room temperature from rising in the summer and from falling in the winter, improving the efficiency of air conditioning and heating. Especially if you use blackout curtains in a room with strong afternoon sun, you can expect to save on your monthly electricity bill. ◆【Triple Weave Technology】The fabric utilizes triple-layer technology, weaving in black yarns, providing excellent blackout functionality. These thick blackout curtains have the function of firmly blocking sunlight and ultraviolet rays from the outside.