Item Type: Acoustic Panels Material: Polyester Fiber Single Size: Approx. 30 x 30cm / 12 x 12in Package List 12 x Sound Panel 1Beautiful Design: Acoustic panels with beautiful appearance and design are very suitable for individuals to reduce and absorb unnecessary wave, reverberation, and wall decoration. 2Polyester Fiber Made: The sound absorbing board is made of polyester fiber, which is flame retardant and safe to breathe and touch, which is suitable for any position in the home or studio, and is safe for adults, children and pets 3Easy to Install: Anyone can install. The back of each panel is self adhesive, which can be glued to the desired position after tearing off. 4Cutable Size: The sound absorbing panel is easy to shape and cut to size, and the change will not affect the performance, or use on the ceiling, behind the TV, or even around your window air conditioner 5Multi Purpose Sound Absorbing Panels: These sound proof panels are multi purpose and can make the office quieter and recording cleaner, which can also be used in professional studios, rehearsal rooms, concert halls, podcasts, churches, etc.