HEXAGON SHAPED&BEVELED EDGE DESIGN: The honeycomb design of our soundproof foam panels makes them ideal for wall decoration and acoustic treatment! Designed with a chamfer edge, these panels offer better protection for your family and friends, such as anti-collision and anti-scratch benefits. Attractive soundproofing panels play a significant role in enhancing the aesthetic of your favorite space! IMPROVE SOUND QUALITY: Composed of 215kg/m3 high-density polyester fiber cotton, our soundproof wall panels effectively reduce noise, eliminate sound impurities, and enhance speech clarity. We prioritize using premium soundproofing materials that are flame retardant, odorless, corrosion-resistant, and fade-resistant. Additionally, these acoustic foam panels achieve a noise reduction coefficient of 0.92 and an absorption coefficient of 0.8! Good sound absorption characteristics: When mixing in a studio, minimizing ambient sound is crucial. Unwanted noise during recording can compromise your work. The sound-absorbing panels excel at absorbing sounds across low, mid, and high frequencies, making them perfect for recording environments. EASY TO INSTALL: No special tools or materials are required! Our precisely cut sound-absorbing panels can be easily attached to various surfaces, eliminating the hassle of determining placement. Ensure the surface is clean, dry, and dust-free before installation. Simply use adhesive, spray adhesive, or nails (not included) to attach the panels. WIDE APPLICATIONS: Professional sound dampening panels are excellent for treating sound on walls in studios or offices. Unique mixed color soundproofing panels are perfect for enhancing the décor of your recording studios, control rooms, offices, home studios, home theaters, and home offices. The odorless and eco-friendly soundproof material is safe to use. size: Side length 17.5cm Material: Polyester cotton colour: Black+silver gray Package Contents: 8 x Black sound insulation board 8 x Silver gray sound insulation board 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 to differ slightly from the real thing. Measurement allowed error is +/- 1-3cm.