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-toxic, 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 various places such as theaters, recording studios, gyms, subways, kindergartencolour:whitematerial:Polyestersize:30cm*30cm*9mmPackage Contents:18 * Sound absorbing panelsOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.