The waterproofing of a fabric by a coating or a membrane is measured in Schmerbers or H20 mm (pressure of a water column). The higher this number, the more waterproof the fabric.
This jacket is designed with a waterproof coating (JIS 1092 standard): this component resists 5,000 mm H20 (Schmerbers) before washing (equivalent to the pressure exerted by a 5 metre column of water).

Our product's fabric is extremely breathable - 12 TER
The breathability of a component is measured by its "Thermal Evaporative Resistance". This is its capacity to let out water vapour produced by the body during activity. The lower the Thermal Evaporative Resistance (TER), the higher the breathability of the fabric.
RET ≤ 9: extremely breathable fabric
RET < 12: very breathable fabric
RET < 20: breathable fabric
RET > 20: little or non-breathable fabric.

Textile dyeing requires a lot of water but also produces waste water from the dye baths. To reduce our environmental impact, we use a mass pigmentation process that involves adding the colour pigments when the yarn itself is produced.
We are delighted that all of our colours are now available in Dope Dyed polyester (8300326, 8300325, 8646291). We have discontinued our old items in order to improve our environmental impact (8731524, 8731527).

By recycling plastic bottles and used textiles to produce our polyester, we reduce the use of petroleum resources while preserving the qualities and performance of the material for your outings.
We use recycled polyester fibres on the black colour version (code 8300326).

We changed the composition of our water repellent treatments in order to use technologies without perfluorocarbons (PFC).
PFCs are used to make fabric water-repellent, however they are toxic to the environment and people. By substituting PFCs with other technologies giving the same level of performance, we are reducing the environmental impact.

To maintain a durable water-repellent fabric, we recommend reactivating it regularly.
Do this every three washes (it is important to rinse abundantly) or after a dozen uses in the rain.
You can easily reactivate the water repellent property by warming the fabric:
- with your tumble dryer for 15 minutes (synthetic programme);
- with a hair dryer at a distance of 20 cm, going back and forth twice;
- or twice over with an iron on a delicate setting without the steam function.

This rain jacket has been designed for a 2-hour hike at a pace of 5 km/h max., without elevation gain.
During sports activity, the extent to which we perspire depends on the intensity or the duration of the physical effort . If the breathability of the fabric is not adapted to your type of physical activity, the perspiration vapour condenses inside the jacket . You will feel damp inside this is not rain coming through but perspiration vapour condensing . You therefore need to choose a rain jacket according to your type of physical activity.

To protect the lower body as well and have a very effective outfit to protect you against the wind and showers, we recommend the men's NH500 over-trousers. These over-trousers are eco-designed. Depending on the colours, we use recycled fibres or dope dyeing processes that limit the use of water.