Features: The sponge is the Perfect sound insulation, sound-absorbing, heat insulation material. Suitable for sound recording studio, listening room, home theater, KTV, and all kinds of public places. Can help increase sound clarity in a room or space. Reduce Unwanted Noise.The panels help reduce reverb, flutter echoes, undesirable acoustic reflections, unwanted noises. Notice: Actual color may be slightly different from the image due to different monitor and light effect Please allow 1-3cm deviation due to manual measurement Specification: Type:Soundproof Foam Material:Sponge Size:30x30x5cm