[3D Acoustic Design is Better] Acoustic panels are specially designed to absorb noise and eliminate echoes. The 3D star wedge-shaped surface increases the contact area with the sound waves, which improves sound quality by reducing noise as they remove echoes and background sounds not by blocking the sound but by absorbing it.[No Installation]Self-adhesive design, no tools or additonal materials are required The sound proof foam panels come with glue on the back, just peel off and stick it to the walls, door and ceiling, save your time and money.[Stylish Decoration]The minimalist design and unique hexagonal design not only improve acoustic quality but also decorate your house. Free splicing combination, our soundproof wall panels are easy to combine with different color to create the most suitable internal structure for you. Widely used, can be placed in the living room, bedroom, studio, home theatre, etc.[High Density and Eco-friendly]9.4 lbs per Cubic Foot density and made with high quality material, odorless, non-toxic, and flame retardant, it is both safe to breathe in and touch. The sound panels not only have effective sound absorption characteristics but also will not cause any harm to our body.color:WhiteMaterial:PolyesterPackage Contents:12 x Acoustic Panels(The color of the adhesive is random, and the specified color cannot be selected)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.