[Fashion]: 230kg/m3, the most compact sound card on the market,the stylish panel design doubles as the decorative wall art of your favorite space, allowing you to leave countless beautiful memories in a comfortable environment. [High Density and Eco-friendly]: Made of polyester fiber cotton,which is fire-retardant and eco-friendly. It is both safe to breathe in and Press, making it great for any location in the home or studio, it's safe for adults, kids, and pets! [Easy to Install]: They can be used as acoustic cover for walls, ceilings and doors, just easily attach it with nails,glue or adhesive taps.Easy to shape and cut to size, altering won't affect performance. [Widely Usage]: Our sound dampening foam panels are great for KTV, recording studios and office,also perfect for vocal booths, control rooms,home theaters, cinema, concert halls, dog kennels, rehearsal rooms and more. [Effectively reduce noise]: For professional acoustic control, sound dampening, acoustic treatment, noise reduction - Reduce waves, reverb and flutter echoes in smaller to medium sized rooms.Improving your audio quality instantly by reducing background noise and echo. Colour:Silver-gray Material:Polyester cotton Size:30x30x0.9cm Package Contents: 40 x Sound absorbing panels