24 Pack- Charcoal Acoustic Panels Studio Foam Wedges 1" X 12" X 12" (24pcs, black)

No just for decoration. Unless your doing the whole room and leaving no space for echo

While these aren't 'soundproofing' they're to prevent reverb/echo in a room. I bought these to provide reverb cancelation in a recording setup and they deleted that extra "bounce" sound the room had before. That being said, the way they came packaged kinda sucked. They were vacuum sealed and all bent and it took a while to flatten them out to mount. I can't be too upset since theyre just foam, but I digress. A nice solution if you need to get rid of that reverb!

Good product

After coming out of the vacuum sealed package they don't all expand to their correct shape and size

i like it a lot it works well and will buy again

There doesn't seem to be a clear way to make the product cling to any adhesive properly. It's the only thing I've ever encountered that's immune to duct tape, and the official recommended adhesive (3M patches) don't stick particularly well. The soundproofing seems to work well, it's just very, very annoying to install.