Fstop Labs Acoustic Foam Panels, 12 Pack Black 2” X 12″ X 12″ Mushroom Studio Wedge Tiles, Sound Panels Sound Proof Foam Panels Sound Proofing Padding For Wall

3D ACOUSTIC DESIGN: Our 2 inches soundproof wall panels provide moderate sound control on walls or ceilings. Perfect for individuals to reduce and absorb unwanted echoes, waves, reverb and flutter echoes.
ENVIRONMENTAL PROTECTION: Made up of environmentally friendly polyurethane sound foam padding at 50/lbs per cubic yard, the sound dampening panels not only have effective sound absorption characteristics, but also will not cause any harm to our body.
QUICKLY RECOVER TO NORMAL SIZE: Open the Vacuum package, put the sound absorbing panel in a ventilated place for about 24-48 hours. Another method is soaking the soundproof foam in water for one minute, then wring the acoustic panels out of the water, using air to dry it or using a hair dryer. You can also let them simmer under the sun as well!