[ APPEARANCE]: Unique puzzle 3D carving exclusive design. It adopts puzzle design, which can not only absorb unnecessary , but also play a role in decorating the wall , acoustic foam.Vibrant decorative sound absorber is the perfect balance of function and design, reducing noise and adding a modern feel to the home or office. [IMPROVED SOUND QUALITY]: Sound absorbing panels eliminate unwanted sound and make other sounds clearer. In the frequency of 5000 Hz ~ 2000 Hz, average absorption coefficient: 0.8, : 0.9. Properly installing a sufficient number of panels in one space can significantly reduce noise, eliminate sound impurities and improve speech intelligibility. [HIGH DENSITY AND ECO-FRIENDLY]: Made with Polyurethane. The sound panels are Odorless. Flame retardant class: B1, it is both safe to breathe in and Contact, making it great for any location in the home or studio, it's safe for adults, kids, and pets! [EASY TO CUT AND INSTALL]: Easy to cut with a knife, you can create different styles of decorative wall art in your favorite space! Easy to install, just attach double-sided tape or glass glue (not included) to each sound insulation pad On the back and paste it to the desired position, if you want to disassemble, just disassemble each panel and reinstall it to the desired position, no need to make a hole in the wall! [WIDELY APPLICABLE]: These noise-insulation panels are multi-purpose. Professional acoustic control, sound dampening, acoustic treatments, noise reduction - Used for professional studios, school, recording studio, home improvement, stage, rehearsal rooms, concert , podcasting, churches, home theaters, vocal booths, home studios, offices, man caves, dog kennels, utility closets,etc. size:30x30x0.9cm Material:Polyurethane colour:Dark Grey + Dark Blue + Wine Red Package Contents: 6 * Sound-absorbing cotton Only the above package content, other products are not included. Note: Light 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.