EASY INSTALLATION - If you're familiar with our acoustic foam, you know how easy it is to install. With a chewing gum-like backing, it's easy and can be attached to a variety of surfaces. No special tools or materials are required for installation... the simple yet essential design will reduce your workload. Significant Soundproofing - We are currently testing the insulation, and from the test results, we know that the acoustic panels can effectively reduce noise and provide you with a comfortable environment. No matter how noisy your neighbors are, you can read some books in peace at home. Furthermore, you don't have to worry about disturbing people when playing at high volume, as the acoustic panel will help you even more. Eliminates Echoes and Standing Waves - High-density material with its particle design effectively absorbs sound and eliminates echoes. Whether you're watching TV at home, playing the piano in the piano room, or even dancing in the practice room, the sound control panel will effectively reduce noise and provide you with the right environment for studying and relaxing. Inflatable and Flame Retardant - Perhaps some wonder if these acoustic panels are safe. In fact, you don't have to worry because it's made of environmentally friendly materials, which are eco-friendly, healthy, and environmentally friendly. We specifically use a lighter to flame the acoustic panel to ensure the material is inflammatory and non-irritating odor, you can use it safely. Wide Use: The soundproofing foam squares are an inexpensive solution for getting better recordings at home or in the studio. Used for professional studios, rehearsal rooms, concerts, podcasting, churches, home theaters, vocal booths, homes, etc. Note: With adhesive, the color of the adhesive is random, you cannot choose to specify size: 30x30x3.0cm Material: Polyurethane color: 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 allowed measurement error is +/- 1-3 cm.