Soundproof Wall Panels, Premium-Thickness Sound Proofing Panels for Walls,Sound Foam Panels for Home Office Recoding Studio with 60PCS Double-Side Adhesive (Black, 12 Pack, 30 X 30 X 5cm)

They come vaccum packed. I found the blue panels especially extremely dirty, tried cleaning them but 2 or 3 were totally unusableAnother issue that seemed worse for the blue panels was the way they never grew to full size.I found a few of the black panels did grow to full size with exposure to air, but the majority of both colours had to be put outside and soaked in water/ dried in the sun to grow beyond pancake thickness... even then, 3 or 4 of the blue ones and 1 or 2 of the black never grew to full size resulting in uneven look on wall.If i went again, i'd go all black

I was sure, the set is like on description but as you can see the pictures of the product has no perfect shape like on description, it SMELS like burning foam (log way to positive), tested with fire, IT'S FLAMMABLE. How it works with soundproofing? It's under tests. If I have to be honest, it's not worth the price advertised. Plus for small double sided squares of tape to stick it on the wall.

If I knew that it is soooooooo bad than I go for wooden acoustic panels .It came in one small package squeezed all together , every piece was so different size and it didn’t recover after unpacking. I put it on the wall and it’s so uneven and every piece is completely different size and thickness . It’s such a waste of money !!! Very badly cut

Most of them didn't even come close to the advertised shape.Even after many days they wouldn't expand and come to expected shape