This is wall acoustic panel made of nice materials, very easy to use. Add quiet atmosphere to your room, let you have a satisfying environment to rest or study. Sound absorption and noise reduction, you can use the soundproof panel rest assured, can be used , in the office, and more places you need. Features -Color:Black -Material: -Size:25.00X25.00X5.00cm/9.82X9.82X1.97in -Enhanced soundproofing: effectively blocks out unwanted noise, creating an ideal recording and playing environment. - sound absorption: crafted from sound-absorbing material, it absorbs indoor sound waves. -Easy installation: the self-adhesive feature allows for easy application on any wall surface without leaving any residue or damage. -Versatile usage: perfect for recording studios, piano rooms, home theaters, and other audiovisual spaces. -You can install the soundproof panel from your wall easily, very easy for you to use. Package list: 12 x wall soundproof panels