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normes
   
 

Protection against cool environments.

Cool climate is an environment generally characterized by a combination of humidity and wind at a temperature of-5 ° C and more.

Articles are divided into three classes depending on their thermal resistance (insulation).

Articles whose thermal resistance is greater than 0.25m2K/W are generally intended for cold environments (EN342).

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Rct (m2K/W) Class
0.06 ≤ Rct < 0.12 1
0.12 ≤ Rct < 0.18 2
0.18 ≤ Rct < 0.25 3
   
 

Articles are also divided into three classes depending on their air permeability :

   
 
AP (mm/s) Class
100 < AP 1
5 < AP < 100 2
AP ≤ 5 3
   
 

Articles are divided into two classes according to their resistance to water penetration :

   
 
WP (Pa) Class
8000 ≤ WP < 13000 1
WP > 13000 2
   
 

Two optional features can be tested: the water vapour resistance and thermal insulation. Clothing certified to this standard includes the following pictogram :

   
 
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> Thermal resistance
> Air permeability
> Penetration of water
> Water vapour resistance
> Thermal insulation