Special triangular grooved shape: Not only beautiful; can effectively absorb high school low frequency sound; remove echo reverberation; make the sound become more energetic.ideal for control rooms; mixing rooms; listening rooms; home theaters. Features: 1. Color can be selected by yourself; splicing is simple; utility knife portable cutting; create your personsal style. 2. Multiple functions: Sound absorption; noise reduction; sound quality improvement; acoustic diffusion; decoration. 3. Good for recording studios, vocal booths, home theaters 4. Light weight soundproof foam easy can be applied on ceilings. Soft / flexible - great for sound proof . 5. Our foam is very easy for cleaning, just use a hand vacuum on a low setting to remove any dust accumulation. 6. Can help increase sound clarity in a room or space. Great use for media content. 7. High density, fireproof, non-flammable. Specification: Condition: 100% brand new Material:Polyurethane Weight: Approx.600g Size:(approx) 50*50*5cm/19.6*19.6*1.96inch Color:Yellow,red,black(optional) Package include: 6*soundproof foam Note: 1. Please allow slight error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.