Shop name:Chong Qing Shuo Yue Ke Ji You Xian Gong Si [Professional Acoustic Treatment]Acoustic foam panels is composed of high-density polymer material,they remove echoes and delete standing waves and flutter effectively. In bringing you a quiet and comfortable environment, it can also improve the purity of vocal music. You would not regret after purchasing them home. [Recover in 5 Seconds]Be different from other soundproof foam panels, acoustic wall panels is instantly pressed through dozens of new high-temperature processes. Full of elasticity and toughness, it will quickly expand and return to its shape with in 5 seconds after opening the package. No soaking, no .Greatly Save your time. [Upgraded Self- Adhesive]soundproof foam are self-adhesive. You 't need to buy additional spray glue and double-sided tape, tear off the kraft paper on the back and at will. Upgraded durable adhesive holds the soundproof wall panels firmly to the wall. Easy to install without worrying about falling off. [Materials Safety & Aesthetics]self-adhesive acoustic foam is and Composed of resilience sponge polymer material, No any risk when you stay in a room with our soundproof foam panel for a long time. It also provides us with a harmonious and elegant atmosphere. Perfect for professional studios, video blogger, rehearsal rooms, concert , podcasting, school, home theaters, offices, pet kennels, etc. Color: Black Material: polyurethane Package Contents: 12x Acoustic Foam Panels (with adhesive, Random color, 't accept the specified color.) 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.