Traditional sound absorbing sponges are large and difficult to clean, while metal based materials are heavy and expensive. The revolutionary new PSA-01 has highly effective sound absorbing properties. Using a patented plastic-formed miniature perforation technique, microscopic holes absorb sound waves and reduce noise. The PSA-01 is lightweight and comes in many colors. The unique triangle beveled design needs only rotate to the right direction for installation. It can be modified to many different styles and feature fashionable emblems. Overall, the PSA-01 is highly sound absorbent, lightweight, and a stylish choice for your wall.