EASY INSTALLATION - If you know about acoustic foam , you know how easy it is to install. Backed with chewing , it is lightweight and can be attached to a of surfaces. No tools or materials are required for installation...the simple design will reduce your workload. Significant Sound Insulation - We are currently testing the insulation and from the results, we know that the acoustic panels can effectively reduce noise and you with a comfortable environment. No matter how noisy your neighbors are, you can read books in peace . Plus, you 't have to worry about disturbing people when gaming at high volume, as the Acoustic Panel will help you even more. Eliminates Echoes and Standing Waves - High-density material with particle design effectively absorbs noise and cancels echoes. Whether you are watching TV , playing the piano in the piano room, or even dancing in the room, the sound control panel will effectively reduce noise and you with the right environment to study and . Inflatable and Retardant - Maybe people are wondering if these acoustic panels are safe. In fact, you 't need to worry because it is made of -friendly materials, which are -friendly, healthy and -friendly. We specially use a lighter to the acoustic panel to that the material is inflammatory and non-irritating odor, you can use it safely. Widely Use: The sound proofing foam squares are a low cost solution to better recordings or in the studio. That used for professional studios, rehearsal rooms, concert , podcasting, churches, home theaters, vocal booths, home,etc. Note: With adhesive, the color of the adhesive is random, you cannot to specify size:30x30x3.5cm Material:Polyurethane colour:Black Package Contents: 12 x Soundproofing Foam 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.