Bass Trap, 4.7"x4.7"x9.4", 12 Pcs, Improving Low Frequency Response, Acoustic Treatment Foams For Studio, Home Theater, Music Room

Somewhat irregular in shape even after 5 days of foam recovery. Some slightly damaged and some are quite mis-shapen from being overly compressed during packaging. Seems ridiculous to compress them so much only for Amazon to ship them in an oversized box! Once expanded they do start to resemble the photographs but trying to find two that match is difficult so don't position them too close together in your sound room. They do attenuate some high frequencies and even some lower mid frequencies when directing sound at them, but the material is a little too lightweight to be adequately effective on lower frequencies which is exactly what they're meant to be designed for!!

It's not as good as I thought as bass frequencies still bothered my neighbour. Needs to be thicker material.

Not bad, not as thick as other acoustic foam I've used but not bad.