3D ACOUSTIC DESIGN: Our 2 inches foam provides moderate sound control on walls or ceilings. Perfect for individuals to reduce and absorb unwanted echoes, waves, reverb and flutter echoes. flame Retardant, it is both safe to breathe in and Press, making it great for any location in the home or studio, it's safe for adults, kids, and pets! 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. The package is vacuum sealed for shipping. The first glance you see the foam is of deformation, but pls do not worry about this. Just unpack the package in time and put them in a well ventilated place for 24-48 hours to restore normal shape. our acoustic foam panels are an Perfect option for absorbing flutter echoes, standing waves and reverberation or unwanted medium-to-high frequencies of sound. Widely used in home or professional studio, home theater, control room, musical instrument studio, ktv, bar, vocal booth, , meeting room, podcast studio, etc. size:30x30x5cm Material:Polyurethane colour:black Package Contents: 12 * Acoustic Panels(Non-standard groove type) 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.