Kind Reminder: Our product is compressed and vacuum-sealed It may be deformed due to transportation It only needs to be washed and dried to return to its original state If you are concerned about product distortion please do not purchase this product Feature: -Soft sponge dust-free; -Sound effects suitable for studios and KTV etc ; Product application principle: Use the open-pored structure to increase its sound absorption capacity and optimize its internal porosity reduce the interference and reverberation of indoor reflected sound improve the purity of the sound adjust the indoor sound field and reverberation and make the sound pleasant to the ears Specification: Material: sponge Size: 300x300x25mm Quantity: 12 pieces Color: black/blue/red/purple Applicable to: Home decoration wall widely used in recording studios recording studios audio-visual rooms audio-visual rooms piano rooms drum rooms anchor rooms home theaters KTV soundproof rooms conference halls studios broadcasting rooms theaters etc Interior decoration of the occasion Package Included: 12 x acoustic foam