Features: Multi-function. For professional acoustic control, sound dampening, acoustic treatment, noise reduction. Great for spot treating sound on walls in your studio or office. Made from premium material, eco-friendly, durable and flame retardant Pyramid-shaped foam provides moderate sound control on walls or ceilings. Hanging our panels is as easy as hanging a picture on the wall. You can give them beautiful shape with a cutter for your style. Specification: Condition: 100%Brand New Material: Sponge Size: Approx.50*50*3cm / 19.69*19.69*1.18in Color: Black /Yellow / Red(Optional) Package List: 6* Acoustic Panels Notice: Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering. Please understand that colors may exist chromatic aberration as the different placement of pictures. Package List 1Multi-function. For professional acoustic control, sound dampening, acoustic treatment, noise reduction. 2Great for spot treating sound on walls in your studio or office. 3Made from premium material, eco-friendly, durable and flame retardant 4Pyramid-shaped foam provides moderate sound control on walls or ceilings. 5Hanging our panels is as easy as hanging a picture on the wall. You can give them beautiful shape with a cutter for your style.