Acoustic foam is used to remove reverberation and sound reflections,provide sound insulation,which is suitable for sound studios. Made of polyester material,durable,soft,non-,and long time to use. It also reduces slap-back and room ring when used in medium-sized areas like isolation booths,recording booths,sound studios,etc. Acoustic foam is suitable for walls,ceilings and doors and other places such as theaters,recording studios,gyms,subways,kindergarten, Its size is about 30x30cm (LxW),and thickness is about 0.9cm,it is also a perfect decoration. colour:Silver grey Material:Polyester size:30cm*30cm*9mm Package Contents: 6 * Sound absorbing panels