[Superior Soundproofing]Made of 215kg/ high density and -friendly polyester fiber, soundproofing foam have an great advantage of reducing and absorbing noise, it is both safe to in and press, too. [No More Worrying About Installation]No tools or materials are needed for installation You t have to wrestle with to it where they need to go, attaching the acoustic foam panels with nails, spray adhesive or double sided tape (not included) . sound absorbing panel will stay on a of surfaces tightly because they are lightweight. Easy to shape and cut to size, altering t affect performance. [Wide Applications] acoustic treatment for multiple occasions, not spot treating sound on walls in your studio and office also for using in recording studios, control rooms, offices home studios, home theaters, home Offices. [Safe and -Friendly] sound panels are sound proofing and retardant, odorless, non-toxic, non-, corrosion resistant, and fade resistant, therefore, its safe for adults, kids, and pets Using studio foam panels on the ceiling, behind the TV or under your rug which leaves countless beautiful memories in a comfortable environment. Colour:black Material:Polyurethane Size:40 x 30cm Package Contents: 12 x soundproofing foams 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.