Made from non-toxic and harmless recyclable polyester material, safe for children, pets, and adults to breathe and touch. Featuring super-strong adhesive stickers: Specially designed for materials with porous surfaces for enhanced adhesion. Removable, leaving no sticky residue on the wall, so you don't have to worry about panel edges bending or falling off. Easily install on any surface. These sound-absorbing panels not only improve room acoustics but can also be laminated for excellent impact resistance, slip resistance, scratch resistance, and aging resistance. They can be used as a protective layer for walls to prevent damage or potential harm to walls when children are playing. Multiple Uses: Acoustic treatment, home decoration, wall protection. Ideal for recording studios, offices, personal studios, home theaters, game rooms, and children's playgrounds. Besides creating spaces suitable for sound reproduction and recording, the unique appearance is also perfect as wall decoration. Color: White Packaging: 12 pieces