Features: 30 * 30cm/ 12 * 12in acoustic foams pack of 24pcs. Ideal for controlling the reflections of sound within a small room. Let you have more enjoyable sound by effectively controlling unwanted reverb and echo. Suitable for recording studios control rooms offices vocal booth etc. Note: The acoustic foam may be a little deformed caused by compression packaging. Please place it for one day before usage. Specifications: Color: Gray/Blue/Red(optional) Quantity: 12pcs/24pcs/36pcs(optional) Material: Foam Thickness: 1-1.5cm / 0.4-0.6in Item Size: 30 * 30cm / 12 * 12in (single) Package List: 24 * Acoustic Foams