Features: 1.Applied to: Studio Piano Room Drum Room Anchor Room Home Theater KTV Meeting Rooms Instrument Rooms etc. 2.Soft sponge no dust high density. 3.Sound effects suitable for studio and ktv etc. 4.Pyramid sound absorbing sponge with beautiful appearance and good acoustic characteristics its biggest feature is: due to its pyramid shape provides little diffusion makes you sound more dynamic. You can for example combined basstrap. 5.Along with the other products consisting of a wide band absorber the effect is very good. 6.Perfect for reducing sound such as studios recording studios vocal booths control rooms offices home studios home entertainment theaters game rooms and home offices. more pleasant sound effectively controlling unwanted reverb and sound. Description: Material: Sponge Weight:330g Compressed packaging size:30*30*7cm Package included: 10*Pieces soundproof sponges Note: Due to the difference between different monitors the picture may not reflect the actual color of the item. Thank you!