Made of high-quality environmentally friendly polyurethane foam, these studio foams are durable and effective, with no health risks, safe to use. Acoustic foam panels have a classic design that offers sound dampening and echo absorption. This product provides strong noise reduction, where moderate dampening is desired. Perfect for treating sound on walls in your studio or office - For recording studios, control rooms, offices, home studios, home entertainment theaters, home offices. The high-quality material of the studio foam can permanently maintain sound insulation properties. For cleaning, you only need to vacuum and dust occasionally. Open the vacuum packaging, place the foam panels in a ventilated place for about 24-48 hours. Color: black Material: Polyurethane Size: 30x30x2.5cm Package contents: 6x sound insulation foam panels Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be a little different from the real thing. The allowed measurement error is +/- 1-3cm.