ISO 11092
Measures thermal resistance Rct through all garment layers after pretreatment.
Rct in m²·K/W determines the class.
| Class | Rct (m²·K/W) |
|---|---|
| 1 | 0.06 ≤ Rct < 0.12 |
| 2 | 0.12 ≤ Rct < 0.18 |
| 3 | 0.18 ≤ Rct < 0.25 |
| 4 | Rct ≥ 0.25 |
EN 14058
Garments for protection against cool environments
Requirements & test methods
EN 14058 evaluates garments for cool environments above −5 °C using thermal resistance, air permeability and optional water protection.
ISO 9237
Measures air permeability for outdoor use at 100 Pa over a 20 cm² test area.
Air permeability in mm/s determines the class.
| Class | AP (mm/s) |
|---|---|
| 1 | > 100 |
| 2 | > 5 to ≤ 100 |
| 3 | ≤ 5 |
Water protection and breathability
Applies to garments claiming resistance to water penetration.
Water penetration resistance ≥ 8,000 Pa. Clothing layers excluding underwear: Ret < 55 m²·Pa/W.
ISO 15831
Measures insulation of the clothing assembly and reference garments on a moving thermal manikin.
Required for Class 4; optional for Classes 1–3. Icler is expressed in m²·K/W for the tested layers.
Outer-material strength
Measures tear resistance of woven outer layers and bursting strength of knitted layers.
Tear resistance ≥ 20 N in both directions, excluding stretch and knitted materials. Knitted bursting strength ≥ 100 kPa at 50 cm² or ≥ 200 kPa at 7.3 cm².
Where the standard is used
Related protective fabrics
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