Features:* Made of eco-friendly foams with high-density, it is fire retardant and healthy, safe 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 acoustic foams may be a little deformed caused by compression packaging. Please unpack and place it for few days for total recovery before use.Specifications:Material: FoamModel: Type 1 / Type 2 / Type 3 (Optional)Color: Black / Blue / Light 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 Acoustic Foams