Description: HIGH DENSITYUpgraded acoustic panels with high density, adopt beveled edge design, absorb unnecessary sound, reduce echo and increase your sound clarity. SELF ADHESIVE DESIGNSelf-adhesive acoustic panels are easy to install, they can be installed to a variety of different surfaces such as walls, doors, windows, ceilings and so on. CAN BE CUTThe self-adhesive acoustic panels is also easy to cut to size, applicable to different scenarios, altering wont affect their performance. DURABLE MATERIALMade of polyester fiber, they are no smell, durable to use, no any risk when you stay in a room with our sound proof foam panels for a long time. SUITABLE OCCASIONSGreat for professional studios, game room, rehearsal rooms, concert halls, podcasting, school, home theaters, offices, etc. Specification: Material: polyester fiber Color: black, grey Size(approx): 30 x 30cm/11.81 x 11.81inch(length x width) Package: 12 pcs x acoustic panel Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement.