[Superior Sound Insulation]: Our sound deadening panels are made of high density 100% polyester fiber, which provides better sound insulation than other acoustic foam mats! Our acoustic foam panels are soundproof and flame retardant, odorless, non-toxic, non-, corrosion and fade resistant. [Stylish]: The stylish square sound panel design can be used as decorative wall art in your favorite space, allowing you to make countless memories in a comfortable environment with our acoustic foam panels / sound absorbing panels. [Easy Installation]: Our acoustic wall panels come with their own adhesive backing, no need for additional glue [Wide range of applications]: Great for spot treating sound on the walls of your studio or office - perfect acoustic matting for walls, recording studios, control rooms, offices, home studios and home entertainment theaters, easy to shape and cut to size, changes 't affect performance. Or use it on the ceiling, behind the TV or under ! Colour:Black Material:Polyester Size:30x30x0.9cm Package Contents: 12 * Acoustic 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.