Component waterproofing
The resistance of a fabric is measured by the height of a water column in mm that can be supported by the fabric (test based on the JIS1092 standard).The higher the water pressure, the more waterproof the fabric.This clothing was validated in a shower test using 60 L/sqm/hr of water for 1h.This test reproduces the average conditions of a rain shower in the mountains.
A component with a 5,000 mm rating can withstand the pressure of a 5,000 mm column of water (equivalent to a 1h-long rain shower)
Component breathability
To assess the breathability of the fabric, the evaporative resistance, RET (test based on the ISO 11092 standard), is measured. The lower the fabric's resistance, the more water vapour generated by physical activity is evaporated, and the higher the fabric's breathability. For example: RET < 9 = extremely breathable fabric / 9 < RET < 12 = very breathable fabric / 12 < RET < 20 = breathable fabric / RET > 20 = little or no breathability.