Flexible Use: Featuring a 45° bevel edge design for a seamless installation without gaps. Made from easily cut polyester fiber, these panels can be DIY-ed into various shapes. With a modern, elegant pattern, each box contains 8 pieces, giving you the freedom to create a personalized space Wide Application: Suitable for various places such as homes, offices, meeting rooms, recording studios, cinemas, schools, etc., meeting your different soundproofing needs Reliable to Use: Our acoustic foam panels are made with carefully selected safe materials, no bad smell, and meet green E0 standards, ensuring safety for both breathing and skin contact, giving you peace of mind while using it Self-Adhesive Design: The back features a self-adhesive design with 3M strong adhesive, ensuring it won't peel off easily. Installation requires no tools, making it quick and easy, significantly saving installation time Efficient Sound Absorption: Made with high-quality polyester fiber, our large-sized, high-density panels cover more area. With an NRC value of up to 1, they effectively absorb mid- to high-frequency noise, reduce echoes and reverberation, creating a quiet and comfortable environment for you