Clothing that carries an EN 343 certification is tested for protection against bad weather.

The latest version of EN 343:2019 involves testing seams for water penetration in classes 1-4 and resistance to water vapor classes 1-4, with 4 being the highest class. The garments must achieve results on both tests to be labeled with the EN 343 symbol.

Protection against ingress of water: 1-4, where class 4 provides the best water tightness Water vapor resistance( breathability): 1-4, where class 4 gives the best breathability Effect of high pressure water drops from above( this is optional).

The results are affected by the construction of the garment, where an unlined garment can achieve EN 343 4 / 4 while a lined garment with the same outer fabric( but with a lining that affects the penetration of moisture) only achieves EN 343 4 / 1.

The previous standard only had 3 classes, these have now been expanded with a fourth class that requires a higher result. Garments certified according to EN 343 continue to apply. PROJOB Workwear will continuously update certified garments.

WATER RESISTANCE( WP) Class 1 ≥ 8000 Pa Class 2 ≥ 8000 Pa material after pretreatment Class 3 ≥ 13,000 Pa material after pretreatment Class 4 ≥ 20,000 Pa material after pretreatment

WATER VAPOR RESISTANCE( RET) The breathing function is indicated in RET value. At a lower RET value, the better respiratory function.

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