1. Sound insulation and sound absorption, reduce noise, eliminate noise, and make the sound quality clear.2. Suitable for recording studios, recording studios, vocal studios, and control rooms.3. Used to absorb mid-to-high range frequencies and reduce echo and overall noise reduction coefficient.4. These sound-absorbing panels are very suitable for on-site processing production studios, practice rooms, theaters or cinemas, and other busy and crowded places, such as gyms, subways, stations, offices, schools, etc.5. These acoustic foam wedges have effective sound insulation for standing waves and flutter echoes, especially when used with our corner bass traps and corner blocksType name: Soundproof foam soundproof cottonStyle: modern and simplecolour: blueMaterial: polyurethaneSize: 30x30x2.5 cmPackage Contents:10 x Sound insulation cottonOnly 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.