Auralex Acoustics SonoLite Acoustic Absorption Panel, 2' x 2' x 1" Thick, 1 Panel, Black Fabric wrapped Studiofoam with rigid backing. Absorbs mid/high frequency reflections to control the ambience of any room. Alleviates flutter echo and slap back. Velour fabric wrap for a more finished, svelt look than traditional Studiofoam. Easily installed to finished walls with EZ-Stick Tabs without causing any damage or visible blemishes when removed.