Heat stress is a topic that is increasingly present in risk analyses. During several interventions firemen complain that they are very, or even too hot before the intervention has even started.
The fire fighters think the transpiration isn't evacuated efficiently during and after the intervention. To avoid this, the wearers attach a great deal of importance to the pursuit of breathability (the lowest RET value).
The outline of these demands is simple: a good thermal protection with values of level 2 that also assures a level 2 breathability particularly during interventions.
We developed a solution with a RET value of < 10 m².Pa/w that is, to this day, very well received especially on the French market.