SK Studio 12 PACK Acoustic Foam Panels Fireproof Pyramid Soundproof Studio Wall Tiles Sound Absorbing for Home Studio Ceiling 11.8"x11.8"x1", White

These foam panels are very tightly vacuum sealed to suck all the air out and compress the panels to the smallest possible size for shipping. The problem is, they don’t always inflate back to normal size. Most panels have one whole or partial row that no amount of time will allow them to inflate again. Instructions say to use water, but in my experience that only partially worked. Another negative would be that they are a very bright white in the package, but once exposed to air (and water to inflate) they start to yellow in short order. Like 1 week!!! It’s not terrible, but I opened the 2 packages a week or two apart from each other and sitting side by side it’s noticeable. As long as they don’t continue to yellow, this won’t be a huge deal, but I noticed it yellowing within the first week. In the photo you can see the yellowing on the left, and how after a few weeks outside the vacuum bag, and after wetting with water, how they just don’t fully retain their shape.

They dont fluff out, they're extremely thin, the pattern is cut off on at least 1 side of every panel. They don't even look like the ones in the picture.. will be returning these...