Home Scene Layout, Sound-absorbing Foam Wall, Indoor Sound-absorbing Cotton description: Suitable for: studio, piano room, tympanum, anchor room, home theater, KTV, musical instrument room, etc. Soft sponge, dust-free, high density; Sound effects, suitable for studios and KTV, etc.; Pyramid sound-absorbing sponge has beautiful appearance and good acoustic characteristics. Its biggest feature is: due to its pyramid shape, there is almost no diffusion, making your voice more dynamic. Use with broadband absorbers composed of other colors, the effect is very good. Material: sponge A piece of soundproof cotton size: 25x25x5cm note: Please allow an error of 1-5mm. Due to the differences between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes 24x sound insulation foam