Fashionable Appearance: This unique hexagonal soundproof panels adopt beveled edge design. Not only can unwanted echoes, also can decorate your wall. Self-adhesive & Easy to install: The sound proof panels have double-sided tape behind . It can be directly sticked to the wall after it is torn. You can paste in wherever you and 't need to prepare extra adhesive or tools to fix it on. High Density: Soundprood Panels are made from polyester fiber material, Retardant, odorless, non-toxic so that both safe to in and touch. In addition, they are abrasion resistance, and scratch resistance. You can also use it to enhance the acoustics in a room or studio. Sound Absorption: soundproof panels have a density of 300 pounds per yard, which can effectively reverb, flutter echoes, unwanted noises and reduce waves. They can greatly reduce to hear neighbors noise and give you a quiet and comfortable space. In addition to using acoustic panels to reduce noise, you can also use it to enhance the acoustics in a recording studio. Wide Applications: It can be used in recording studios, office, home entertainment theaters, cinema, KTV, etc. Easy to shape and cut to size and 't affect performance. The stylish design can also as a decorative in your favorite space. Material: polyester fiber colour: black Package Contents: 12 x acoustic board 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.