SD SODOCT Yazhi 8 Pack - Bass Traps Acoustic Foam Corner, 8''x8''x12'' Black Bass Traps Corner Studio Foam, High Density and Fire-Proof Bass Traps Acoustic Panels with Double Side Adhesive Tape

Works well but took a week for the strong smell to abate.

These fit perfectly in my corners and are very thick and durable. They pair really well with my acoustic foam panels. Since they don’t come with adhesive, (you’ll need your own) but once you have it, you just slide them into the corner and they’re good to go. They recommend letting them puff up for 24–48 hours, but mine were fully expanded in less than 24 hours. Great product and well worth the price.

Calidad buenísima. Densidad adecuada. Excelente producto!

Excelente producto.

basic acoustic foam, don’t expect an enormous difference, but it does help the low end