EN14058

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).

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 :

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