[Professional Acoustic Treatment] Acoustic foam panels adopt a novel pyramid 3D design and high-density polymer material. The contact area between the soundproof foam panels and the sound wave is increased, which can effectively reduce flutter , reverberation, standing wave and high-frequency noise. In bringing you a quiet and comfortable environment, it can also improve the purity of vocal music. [Convenient Self-Adhesive] For Acoustic wall panels, you don't need to buy additional glue and double-sided tape. Our soundproof foam board comes with a self-adhesive layer, tear off the kraft paper on the back and at . The strong and long-lasting adhesive keeps the soundproof cotton firmly fixed . Easy to install, don't worry about falling off. [Rapid Expand & Recovery] Soundproof wall panels are composed of sponge polymer material, which is instantly pressed through dozens of new high-temperature processes. Full of elasticity and toughness, it quickly expand and return to its old shape