[Noise reduction]: Our 3D acoustically designed 2inch foam helps break up sound waves and provide Perfect moderate sound control on wall or ceiling.[Reduce inversion]: 50/pound per yard, these acoustic panels can effectively absorb unnecessary floating . Made of non environmentally friendly polyurethane foam, 50/lb per yard.[Easy to install]: They can be used as acoustic covers for walls, ceilings and doors, just use glue or tape to easily connect them. Easy to shape and cut to size, easy to change without affecting performance, no special tools or materials required.[Anywhere]: Very suitable for live therapy sound on walls of studios or officesused in recording studios, control rooms, office home studios, home entertainment theaters, home offices. Easy to shape and cut, modification will not affect performance.[Wall Decoration]: Fashionable design doubles as decorative wall art for your favorite space. It can be used in recording studios, KTVs, offices, home theaters, etc., allowing you to leave countless beautiful memories in a comfortable environment.Colour:BlackMaterial:PolyurethaneSize:Height: 5cmPackage Contents:12 x Soundproofing FoamOnly above package content, other products are not included.Note: Light and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/ 13cm.