This is a soundproofing panel, which are made of excellent materials, durable and can be used for a long time. These sound insulation boards are denser, thicker, and more uniform, which produces more sound absorption effects. Features -Color:White -Material:Polyester -Size:30.00X30.00X0.90cm/11.79X11.79X0.35in -It can not only reduce noise, but also play the role of home decoration. You can also cut at will, easily cut, give you better visual enjoyment. -Our soundproofing pads are made of quality polyester and are safe for your and can be used anywhere in your home. -Soundproof board with acoustic treatment, suitable for recording , office, game room wall, indoor reverberation, standing wave, echo. -You can install and remove them from your wall easily, very simple for you to use. -These soundproofing boards can be used as memo boards or soundproof boards for walls, ceilings and doors. Package list: 12 x Felt Boards