Features: High density acoustic foam cell structures for maximum noise absorption Helps to reduce excess reflections and reverberation Improves vocal clarity and acoustics of your room Great for use in recording studios, home theatres and karaoke room Can help increase sound clarity in a room or space. Notice: Actual color may be slightly different from the image due to different monitor and light effect Please allow 1-3cm deviation due to manual measurement Specification: Material:Sponge Size : 25 x 25 x 5 cm