Usage Tips:sound panels an perfect choice for reducing unwanted noise and and create a more comfortable and enjoyable environment for sleeping, listening to music, watching , or working on projects. being opp packed for efficient shipping, these sound absorbing foam quickly regain their shape. This would save much of the time spent waiting for recover the noise-canceling wall panels. sound foam panels are come with convenient back glue, ensuring effortless installation without the worry of damaging your walls. Simply peel off the backing and apply the sound absorbing panels to clean and dry . This makes our soundproof foam a convenient and hassle-free solution for anyone looking to soundproof their home or workspace. Crafted from eco-friendly polyurethane, these acoustic wall panels -free air quality. This makes our acoustic panels sound absorbing a safe choice for diverse settings like home theaters, studios, offices, and bedrooms. Our soundproofing panels for walls top- sound control while maintaining eco-friendly. With adhesive backing, adhesive color is random, Not accepting designation Material: polyurethane Color: Gray 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.