"Ken Reed" wrote

I've had a set of Quiet Technologies for a couple of years. They aren't
as quiet as ANR but are much better than a regular headset without ANR.
The foam also got distorted and didn't seal well in high heat. Once over
110ºF, they didn't fit very well or for very long.

Like everything in aviation, they are a compromise. They are light
weight and comfortable and reasonably quiet, though.

Have you tried the optional triple flange silicone tips? I have found these
are the only type of ear plugs I can stand to wear for any extended period
of time. They also block sound better than foam earplugs.
--
Jim in NC