How much is the waterproof and breathable index of the jacket?

How much is the waterproof and breathable index of the jacket?

For those who love outdoor sports, punches are definitely one of the essential equipment.Whether it is climbing or skiing, climbing, jackets, you can come in handy.Perhaps many people will be confused. Why is the function of the jacket so great and so strong?This is the role of the fabric of the charge.

No matter what kind of assault jacket, waterproof and breathability in its fabric selection is the key.From the perspective of materials and production, some are waterproofed by fabrics and coating, some are waterproof by waterproof and breathable membranes, and both are combined to combine waterproof.Since the fabric of the jacket can be waterproof and breathable, how can we distinguish the performance between them?Here we must first introduce two indicators to measure waterproof and breathable performance:

waterproof index (unit: MMH20, millimeter water column pressure): In short, the waterproof index with a 10000mmH2O fabric can press the 10000mm high water column to press it on it. There are no more than 3 drops of water from the fabric within 24 hours.

Breathable index (unit: G/M²/24HR, one gram of water vapor per Square meter per day): In the area of a Square meter, how many grams of water vapor can pass through.One person loses half -liter flow (almost 500g) through the Skin every day. As the amount of exercise increases, the amount of loss will double, which means that we need a higher breathable index to ensure that the water vapor on the surface of the Skin surface will be discharged from the surface of the Skin surface.Essence

Basically, the breathability of a qualified jacket is 3000g/m^2/24HR, and the waterproof performance is above 5000mmH2O or more.Comecry needs.

Therefore, when we are buying a jacket, the most important thing is to choose the fabric and good waterproof and breathable.In contrast, the aesthetic requirement is secondary.