Composed of 100% polyester, the sound-absorbing panel is , sound insulation, odorless, , slip resistant, and fade resistant, and it provides better sound insulation than those panels made of foam. It can prevent many unnecessary sound to make the room more quiet. Features -Color:Light Grey -Material:Polyester fiber -Size:30.00X0.80X26.00cm/11.79X0.31X10.22in - Made of safe material, these panels have acoustic absorbing effects and durable for use. - They utilize the insulation and anti-shock properties of the sound absorbing material, for home, professional studios, home theaters and more. - Modern design with hexagon shape and beveled edges, not only practical, but also decorative. - Easy to cut and install, bring you much more convenience to use, no need of other complicated tools. - Exceptional sound absorption minimizing reverberations and echo, let you have satisfying using feeling. Package list: 12 x soundproof panels