Please allow 1-5mm error. The sound effects, suitable for studio and KTV etc; Applied to: Studio, Piano room, Drum room, Anchors room, Home , KTV, Meeting rooms, Instrument rooms, etc. Size: 25x25x5cm sound-absorbing sponge with beautiful appearance and good acoustic characteristics, its greatest feature is: due to its 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 , the effect is very good. 1 x Soundproof foam Material: Sponge Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! soft sponge, no , high density; 1 X Soundproof Foam Sound-absorbing Sponge With Beautiful Appearance And Good Acoustic Characteristics, Its Greatest Feature Is: Due To Its 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 , The Effect Is Very Good. The Sound Effects, Suitable For Studio And KTV Etc; Please Allow 1-5mm Error. Material: Sponge