♥:Size: 30 * 30 * 2.5 CM♥:Material: sponge♥:Color: Blue+Black♥:Quantity: 12PCS♥:Area: 1.08 square meters;-----------------------------------------------♥:Environmental protection and health, sound insulation, sound absorption and noise reduction. High-density flame retardant, long-lasting durability. Decorative walls, reusable♥:The product has flame-retardant properties and self-extinguishes away from the fire. Waterproof and moisture-proof. Excellent thermal insulation performance♥:Applicable scenes: Drum room, piano room, bar, KTV, bedroom, hotel，opera house, kindergarten, theater, recording studio, conference room, concert hall, etc.-----------------------------------------------♥ ：Tip: Due to different measurement methods, slight errors may occur. Please refer to the actual product♥ ：Tip: As we use international logistics, parcels usually need to arrive within 14 to 25 days♥ ：The high-quality sound insulation board effectively reduces the reflection interference of the indoor sound waves, maintains the optimization and improvement of the sound purity, and makes the sound clear