[Environmentally friendly material] sound insulation foam panel is made of environmentally friendly high-density polyurethane foam, which is fireproof and non-toxic. Professional sound-absorbing foam, safe to use. [Widely Used] These studio absorption foams are widely used in homes, offices, recording studios, ceilings, movie theaters, game rooms, vocal pavilions, and control rooms. It will not interfere with each other! [Easy to install] we are equipped it can be installed on walls, ceilings, doors and windows. No tools are needed and will not be damaged. You can reduce the size according to your needs without affecting its performance. [Excellent Sound Absorbing Performance] for professional recording, YouTube video and live streaming, these are the must-have products. Sound insulation foam is used to eliminate reverberation and sound reflection, professional studio acoustic treatment level, slow down echo and external noise, so that the audience can learn more clearly. Color: BlackMaterial: PolyurethaneSize: 30x30x2.5cmPackage Contents:24 x Black Acoustic FoamOnly 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 error is +/- 1-3cm.