Feature：Material: Sponge（High density flame retardant） Size: 24x12x12cm Applied to: Studio, Piano room, Drum room, Anchor's room, Home Theater, KTV, Meeting rooms, Instrument rooms, etc. soft sponge, no dust, high density; The sound effects, suitable for studio and KTV etc; Pyramid sound-absorbing sponge with beautiful appearance and good acoustic characteristics, its greatest feature is: due to its pyramid shape, it provides little diffusion, it makes you sound more dynamic. It may, for example BASSTRAP combined together with the other products, consisting of a wide band absorber, the effect is very good. Return method:1: direct unpacking back type 2: soak water dry 3: hand shake pull Note:Please allow 1-5mm error. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Included:12pc x Soundproof foam