Acoustic panel panels, reduce noise pollution and thus contribute to improving the room acoustics. This in turn primarily increases the sense of -being and acoustic comfort.acoustic panels are -adhesive and can be mounted very easily without additional tools. The sound absorber can be securely installed on any surface such as wood or woodchip wallpaper.The sound insulation is made of non-toxic and recyclable polyester fibre material, It is an ideal material for indoor acoustic panels, which is safe for children, pets and adults. For safe use.soundproof acoustic panels are also ideal for recording studios, conference rooms, home theatres, offices, music rooms, classrooms, hotels and band rooms. As a background wall, photo wall, message wall and work wall.For the optimal sound and perfect acoustics.Note: Backglue Random color, 't accept the specified color.size: One side is about 17.5cm longMaterial: Polyurethanecolour: Dark gray + silver grayPackage Contents:12 x Acoustic PanelsOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.