12pcs acoustic foam panels, Hexagonal sound absorbing panel, beveled edge sound panels, high-density wall tiles[Special design appearance]: the hypotenuse design not only absorbs unnecessary echoes, but also plays the role of a decorative wall, better than sound-absorbing foam. [High Density & Environmental Protection]: Made of polyester cotton fiber. The sound insulation is odourless and formaldehyde-free. Fireproof Grade: B1, safe to inhale and iron, suitable for any position in the house or studio, safe for adults, children and pets! [Improve sound quality]: The sound-absorbing board can eliminate unwanted sounds and make other sounds clearer. In the frequency range of 5000Hz 2000Hz, the average sound absorption coefficient: 0.8, NRC: 0.9. Proper installation of enough panels in a space can significantly reduce noise, eliminate sound pollution, and improve speech intelligibility. [Easy to Cut and Install]: Cut easily with a sharp knife, you can create various styles of art wall decoration in your favorite space! Easy to install, simply double stick double-sided tape or glass adhesive (not included) on the back of each soundproofing pad and stick it in the desired position. If you want to remove it, simply remove each panel and install it without holes in the wall in the new location of your choice! [Widely Used]