Soundproof Perfection: These acoustic foam panels are made of high density sound absorbing foam that effectively reduces echoes and noise reverberation for clearer sound. | Easy Installation: The self-adhesive backing makes these panels simple to apply to walls, ceilings, doors and other surfaces without tools for an instant soundproofing effect. | Studio-quality Foam: Made from high density polyurethane acoustic foam, these 30 x 30 x 5cm pyramid panels provide studio-grade sound absorption for vocals, instruments and more. | Effective Sound Absorption: This 36-pack of acoustic foam panels offers a wide-ranging sound absorption experience, effectively addressing resonance issues in many spaces such as home recording studios, offices, or music practice rooms. | Durable and High Quality: The 2-inch acoustic foam is designed to offer more durable and long-lasting performance compared to thinner panels. These panels maintain their shape, resist compression, and continue to deliver excellent sound absorption over time, making them a reliable choice for any acoustic treatment project.