[ material]: Flame retardant, breathable and safe to contact, very suitable for any position in the home or studio, safe for adults, children and pets! [Fashion appearance]: hexagonal acoustic panel adopts a beveled edge design, which can not only absorb unnecessary echoes, but also play a role in decorative walls. [Good sound absorption characteristics]: If you are mixing in a studio, you must reduce the ambient sound. Unnecessary noise during recording will it. The sound-absorbing board can absorb the sound produced by low frequency, middle frequency and high frequency, which is very suitable for recording. [Easy to cut and disassemble]: Use a sharp knife to cut easily, if you want to disassemble, just disassemble each panel and reinstall it to the desired position, there is no hole in the wall! [Environmental protection and indoor use]: The sound panel is tasteless. Flame Retardant Rating: B1-On-site sound processing on the walls of recording studios or offices, suitable for recording studios, control rooms, office home studios, home entertainment theaters, and home offices. size:Side length 17.5cm Material:Polyester cotton colour:Black + Silver gray Package Contents: 12 x Black sound insulation board 12 x Silver gray sound insulation board.