soundproof wall panels comes with adhesive backing, which reduces the installation cost and makes the operation easier. Just tear off the protective film on the back and adhere in the position. This hexagonal sound insulation board adopts beveled edge design, you can hang this hexagonal soundproof wall panels in a of ways and double as a decorative in your favorite space. Offering dcor without sacrificing any of their soundproofing power. The sound dampening panels is made of high density polyester fiber, better sound insulation than other soundproofing foam padding acoustic foam panels are sound proofing and retardant, odorless, non-toxic, non-, corrosion resistant, and fade resistant. These noise-insulation panels are multi-purpose. Great for spot treating sound on walls in your studio or office - The perfect sound proofing padding for wall, recording studios, control rooms, offices, home studios, and home entertainment theaters. By deadening unwanted sound using absorption panels, you can make other sounds much clearer. It contains 15 pieces sound-canceling panels,and a of colors are also available. your creativity to decorate your unique space Colour:3:black Material:polyester fiber Size:17.5cm Package Contents: 12 x Hexagon Sound Proof Panels Note: The adhesive color is random, 't accept the specified color 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.