Description This is a soundproofing panel, which is made of polyurethane materials, durable and can be used for a long time. These sound insulation acoustic panels are denser, thicker, and more uniform, which produces more sound absorption effects. Features - Color: Black - Material: Foams - Size: About 25.00X12.00X12.00cm/9.82X4.72X4.72in -Soundproof panels have professional acoustic control, acoustic processing, noise reduction and muffling ability, to minimize interference and improve sound clarity. - Sound absorbing material reduces the reflection of the sound produced in the room and attenuates the sound. - These soundproofing acoustic panels can be used as soundproof acoustic panels for walls, ceilings and doors. -Soundproof acoustic panel is lightweight and flexible, so it can be tightly fitted to a variety of surfaces, easy to shape and cut. - The soundproof panels are suitable for music studios, podcasts, home theaters, and living spaces.Packing list4 x Acoustic Sponges