Size: 14.2 x 12.3 x 0.5 inches, pack of 12; Design: Hexagonal with beveled edge The studio panels are dense and thick; Great at cancelling room reverb, echoes, standing waves, and noise; These high dense panels can reduce unwanted echoes, reflections. Sound listens less harsh and much clearer after these panels installed on wall or ceiling. The soundproofing panels are Odorless, Non-, and Formaldehyde-free. Excellent acoustic treatment for home theater, podcast, voice overs, recording studio, office, nursery, classroom and more The Sound insulation panels are easy to cut with a knife and mount on walls ceilings with their adhesive backing. Perfectly good for video, audio recording, interview, meeting, podcast, live, music, and gaming room. size:Side length 17.5cm Material:polyester fiber colour:aqua grey Package Contents: 12 * Sound Proof Foam Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.