[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 -temperature processes. Full of elasticity and toughness, it quickly expand and return to its shape with in 5 seconds after opening the package. No soaking, no waiting.Greatly Save your time. [Upgraded Self- Adhesive]soundproof foam are self-adhesive. You don't need to buy additional glue and double-sided tape, tear off the kraft paper on the back and at . Upgraded 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, don'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.