acoustic panels are high-density, non-toxic, and formaldehyde-free, made of 100% polyester fiber. Each acoustic panel is 1 square foot of 1-inch thick acoustic wedge, and our 12-pack covers an area of 12 square feet. Experience superior performance with sound proof foam panels for on-site sound processing in areas. Upgraded Self-Adhesive Sound Proof Foam Panels: Our 12-pack of acoustic panels features a self-adhesive design, ensuring long-lasting adhesion. Installation is a breeze with just three steps: open the package, off the backing, and stick. No need for extra tape. Enjoy the -lasting adhesion on the market. Stylish Decor & Superior Performance: acoustic panels stand out from ordinary acoustic panels with their vibrant colors and attractive appearance, making them the perfect for . Our hexagonal acoustic panels will be a fashionable addition to your space while providing excellent on-site sound processing for venues. Versatile Applications: acoustic panels are suitable for studios, homes, entertainment theaters, and home offices. Our sound proof foam panels are a perfect and safe material for adults, children, and pets! Colour:black Material:polyester fiber Package Contents: 12 x Sound insulation foam panel 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.