UPGRADE HOLLOW-OUT ACOUSTIC PANEL: This upgraded hexagonal acoustic panel is more fashionable than the traditional sound-absorbing foam, which can meet your more DIY creativity. Two unique hollow-out sound-absorbing wallboards will also add to your artistic wall. Besides absorbing noise and eliminating , they can also play a role in decorating and protecting the wall. SELF-ADHESIVE & EASY TO INSTALL: The entire back of our soundproof panel is covered with a self-adhesive adhesive layer, which eliminates the need to purchase additional glue or adhesive tape. Only needs to determine the pasting position of the panel, please tear off the protective layer directly when using it, installation of one panel can be completed in 10 seconds. This saves time, effort, and money, reducing installation costs, and making operation easier. ECO-FRIENDLY HIGH-QUALITY MATERIALS: This mixed-color sound dampening panel is made of 100% high-quality Polyurethane, and its sound absorption and noise reduction effect is that of foam panel. Besides is flame retardant, odorless, non-, gas free, slip resistant, corrosion resistant, and fade resistant. Whether it's adults, children, or pets, breathing and touching are safe. MULTIPURPOSE ACOUSTIC PANEL: The hexagonal design, multiple DIY splicing methods, and fashionable cutout patterns can meet your dual needs for acoustic processing and wall decoration. They are suitable for bedrooms, living rooms, home theaters, home game rooms, recording rooms, vocal music rooms, offices, rehearsal rooms, and live broadcast rooms. note: Adhesive are randomly colored. Cannot be chosen the specific color. size: 17.5cm on one side Material: Polyurethane colour: Multicolor Package Contents: 12 x Acoustic Panels Only the above package content, other products are not included. Note: Light reflection 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.