Whisper™ is a closed cell polethylene foam which has cells that are subsequently opened through the manufacturing process resulting in a highly efficient sound absorbent material with unique advantages compared to other materials.

Resilient to Water and Humidity.

One of the key features of Whisper™ foam is the ability to remain almost unaltered when exposed to water or humidity, the product’s acoustic performance remains consistent.


Testing of Whisper™ foam was carried out at Instituto Giardani, Italy under the EN ISO 354: 2003. Measurement of Sound Absorption in a reverberation room.


In-house testing using an Impedence Tube takes place on a regular basis to qualify the acoustic performance on Whisper™ foam.