36 Pack Sound Proof Foam Panels for Walls 12" X 12" X 2" Pyramid Acoustic Foam Panels with Self-Adhesive High Density Soundproof Wall Panels for Studio and Home

Left the package open for 2 days, it was ready to be stuck on the wall! So far so good!

These are pretty good, decent in muffling the echo in a 10X7 room, the soundproofing can be better. Sticks good on the wall.

Easy to trim and peel backing,I am very pleased with the quality as well.

Highly recommended this product! They're great at treating a computer desk space and easy to install!

Works in a small space. Not for temporary purposes!It leaves behind an adhesive residue that took me 8 hours and a bottle of goo-gone to remove.I had put them up to keep sound from going through the wall. We ended up moving 6 months later, and they didn’t all come off in 1 piece so I had to strip away the foam to get down to just the adhesive. Then wipe the adhesive away with a micro-fiber cloth and goo-gone.Probably great for long-term use. Not ideal for short term.

I spent $800 buying 13 bundles of this product. The reason that I purchased them in comparison to others was because they were supposedly self-adhesive; just peel and stick. The problem with the peel and stick is the stick part doesn’t happen for more than a day on about 40% of the tiles that we put up. So then I have to go purchase an adhesive and redo what’s fallen already and redo what’s loose waiting to fall. A definite ONE ⭐️ Because it did not perform as advertised.

WOW. These are the the best wedge foam panels I have ever used. I used a pack of these and a pack of AUSLET foam pyramids to make a sound absorbing panel to reduce reflections and echo to help deaden the sound in a room and I am truly impressed. I have used other brands of foam sound panels from Amazon before but they did not work nearly so well. I mounted the foam to a piece of hardboard and hung the hardboard on my wall like a piece of art.These panels really blew me away! With 12 squares mounted to a hanging piece of hardboard, the audible echo in my room is basically GONE. I did not expect such good results from a single 12 square foot panel.When I opened the vacuum sealed package, all of the panels puffed up and were usable. There was no weird off-gassing smell or odor. The foam feels quite dense, which I think is why they perform very well and why they all puff up. It's does mean they might feel a little thin in your hands, but they work better than any thicker panels I have used, so it's not a complaint. Instead of thick foam that is mostly air, these are nice dense foam that really does absorb reflected sound.The adhesion of these is excellent as well. I love the peel and stick back. They stick REALLY well though, so if you accidentally mis-place a panel, you will not be able to get it off cleanly to reposition it. Once they are down, they are stuck on, they are STUCK. But that's great! That's what you want! So much better than having panels falling off the wall!I definitely would recommend these AUSLET foam panels, and the pyramid panels too. They are great quality and work well. No weird smells or offgassing. Easy to install and very secure.NOTE: These panels are unlikely to actually sound-PROOF your space, but they do a great job treating your space for reflections and managing unwanted audio artifacts and interference (that's what this kind of panel is for!).

After unpacking i had to trash few tiles since they never got back to normal shape. I used the good one and they looks good.