EN 342
Cold and low temperatures
Back to overviewProtection against extreme cold: EN 342 standard for workwear
EN 342 describes the requirements and test methods for clothing that provides protection in conditions of extreme cold, wind, and moisture. This usually involves clothing ensembles, such as overalls or a combination of jacket and pants. Head, hand, and foot protection are not covered by this standard.
What does EN 342 entail?
The European EN 342 standard specifies the performance requirements for workwear to provide protection at temperatures below -5 °C. The emphasis is on insulation against cold, protection against wind, and, where applicable, moisture resistance.
Symbol and technical requirements of EN 342
The corresponding symbol is an ice crystal with performance values. Depending on the version of the standard, the following values may be listed:
- Clo value
- X value
- Y value
Explanation of the test values
- Clo value
This value indicates how long a person can work comfortably at a certain temperature. This is not a class, but a measured value. The higher the clo value, the better the insulation. - The X value
The X value indicates how windproof the garment is. There are 3 classes, with class 1 allowing the most air through and class 3 the least. - The Y value
The Y value indicates the water vapor resistance. There are also three classes, with class 1 offering the lowest water vapor resistance and class 3 the highest.
New version EN 342 (2004)
In the latest version, the clo value is replaced by:
Icler/Icle: insulation tested with moving or stationary mannequin
In addition, there are two Y values:
- Y1: air permeability (class 1–3, different test method than before)
- Y2: waterproofness (class 1–2, optional)
If clothing is waterproof, its breathability must also be tested.
Where do you use EN 342 workwear?
EN 342 clothing is indispensable in environments with temperatures below -5 °C, such as:
- Cold stores and freezer rooms
- Outdoor work in winter conditions (construction, infrastructure, transport)
- Industrial environments with prolonged exposure to cold and wind
Performance and design requirements
Clothing that complies with EN 342 must:
- Comply with EN 340 (general requirements for fit and sizing).
- Have no openings through which cold can penetrate.
- Ensure comfort and freedom of movement, even in harsh conditions.
Follow our EN 342 training and learn all about protection against freezing temperatures.
In extreme cold, every layer counts. EN 342 is the standard for thermal workwear in harsh conditions, with requirements for insulation, air and water vapor resistance. This training provides insight into putting together protective clothing combinations that comply with the standard. Aimed at companies that want to equip their staff safely for prolonged work below -5 °C or want to know more about standards for workwear.