Sound Proof Panels for Walls can absorb and reduce noise, eliminate echoes and background sounds, and create a quiet recording environment and office environment. Acoustic panels can easily eliminate standing waves and flutter for clear and pure sound. soundproof wall panels feature self-adhesive technology. There is no need to buy additional glue, and the acoustic panels can be installed on walls, doors, windows, and ceilings at any time without tools. soundproof wall panels cater to a wide range of settings, including professional studios, rehearsal spaces, concert halls, podcasting spaces, home theaters, vocal rooms, home studios, offices, bedrooms, and even dog kennels. They provide professional acoustic treatment. Additionally, these sound proof panels for walls can be laid flat or cut to enhance wall decor in living rooms, hallways, and bedrooms. With adhesive backing size: 30 x 30 x 1cm Material: polyurethane colour: White 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.