Design and High Cost-Effectiveness: honeycomb shape combines broad applicability with a hexagonal design feel. By conducting data surveys on a large number of home decoration preferences in the market, we finally determined, designed and produced this shape of sound board. the sound insulation board is , strong and scratch-resistant. Plus, they are odorless, non-, formaldehyde-free and safe for adults, children and pets to breathe and touch! EASY TO INSTALL: The soundproof wall panels feature an adhesive backing that allows for easy installation without any additional tools. Perfect for professional studios, recording studios, vlogs, game rooms, podcasts, schools, home theaters, offices and more. Efficient Noise Reduction: Our sound-absorbing panels have a Noise Reduction Coefficient () of 0.9, absorb at least 25 decibels of noise, can effectively eliminate and reverberation, and provide clear audio. color: Black Material: Felt cloth Package Contents: 1 set of soundproof wall panels (pack of 12) 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.