[Superior Soundproofing]: Made of 230kg/m3 high density and eco-friendly polyester cotton, our soundproofing foam have an great advantage of reducing and absorbing noise, it is both safe to breathe in and press, too. Besides, the sound proof foam panels do well on the test of noise reduction, achieving of 0.95 which is all of the sound panels on the market. [Fashion appearance]: hexagonal acoustic panel adopts a beveled edge design, which can not only absorb unnecessary echoes, but also play a role in decorative walls. [Safe and Eco-Friendly]: Our sound panels are sound proofing and flame retardant, odorless, non-slip, resistant, and fade resistant, therefore, it's safe for adults, kids, and pets! Using our studio foam panels on the ceiling, behind the TV or under your rug which leaves countless beautiful memories in a comfortable environment. [Easy Installation]: You 't have to wrestle with to where they need to go, attaching the acoustic foam panels with nails, adhesive or double sided tape (not included) easily. Our sound absorbing panel will stay on a of surfaces tightly because they are and bendable. Easy to shape and cut to size, altering 't affect performance. [Wide Applications]: Great for spot treating sound on walls in your studio or office - For use in recording studios, control rooms, Offices home studios, home entertainment theaters, Home Offices. Easy to shape and cut to size, altering 't affect performance. Or use it on the ceiling, behind the TV or under your rug! Colour:black Material:Polyester cotton Size:Side length: 17.5cm Package Contents: 18 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 measurement allowed error is +/- 1-3cm.