large size sound proof panels that can widely cover your room; Not only enhance the audio experience, but also can be applied as wall decoration, the appearance easily blends into decoration styles the fabric soundproof treatment for wall is made of high density polyurethane material, no odor, and safe, healthy, flame retardant the acoustic panel is easy to install, with a self adhesive design, you only need to peel off the top lining on the back and stick the acoustic panel to the wall, no other tools are required this self adhesive sound proofing panel can effectively absorb sound waves, reduce resonance and , produce less noise and enhance audio quality; Provides good acoustic treatment for rooms, recording studios, home theaters or conference rooms the noise reduction panel is designed for a of scenarios; It is not only suitable for home decoration but also can be applied in professional studios, offices, home theaters, classrooms, nurseries and more With adhesive backing size: 40 x 30 x 1cm Material: polyurethane colour: Black Package Contents: 12 x soundproofing panels Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.