• Excellent noise absorption: Minimizes interior echo and exterior noise with high-density 100% polyester fiber acoustic panels (1700 g/m²). NRC rating of 0.9, attenuating annoying noise frequencies by up to 90% and reducing echo by 97%. • Safe use: Made with 100% polyester fiber, they are sound-absorbing, waterproof, odorless, and durable, offering a safe and long-lasting solution. • Customize your space: Hexagonal honeycomb design, perfect for decorating with style and functionality. • Easy to install: Self-adhesive backing, just peel off the protective film for easy installation on smooth and dry surfaces. • Various applications: Perfect for echo cancellation in recording studios, gaming rooms, home offices, home theaters, living rooms, bedrooms, etc.