Specification: Material: Sponge Size: 25x25x2cm Quantity: 10 Packing volume: 25x25x8cm Color: black, white, gray, blue, red, purple, yellow Features: The sponge is soft and dust-free. It is suitable for studios, KTV, etc. It uses an open-pore structure to improve sound absorption, optimize internal porosity, reduce interference and reverberation of indoor reflected sound, and improve sound purity. It adjusts the indoor sound field and reverberation to make the sound pleasant. It is suitable for home decoration walls, widely used in recording studios, audiovisual rooms, piano rooms, tympanum, host room, home theater, KTV, soundproof rooms, conference halls, studios, broadcasting rooms, theaters and other occasions for interior decoration. Package includes: Sponge*10