Features: * Made of eco-friendly foams with high-density it is fire retardant and healthy for both people and pets. * Perform well in absorbing and reducing unwanted echoes flutter echoes waves reverb creating a better recording and listening environment. * Can be widely used in studios recording studios control rooms vocal booths home office etc. * It is not only a sound absorption tool but also a nice decoration for wall and ceiling. * 3 types with different shapes and dimensions are available for choices. Pack of 12pcs and 3 colors optional meet your various needs. * Note: The foams may be a little deformed caused by packaging. Please unpack and place it for few days for total recovery before use. Specifications: Material: Foam Model: Type 1 / Type 2 / Type 3 (Optional) Color: Black / Blue / Gray (Optional) Item Size: 30 * 30 * 3cm / 12 * 12 * 1.2in (Type 1) 30 * 30 * 2.5cm / 12 * 12 * 1in (Type 2) 30 * 26.3 * 2.5cm / 12 * 10 * 1in (Type 3) Package List: 12 * Pieces of Foams