The role of the jacket is to shelter from wind and rain, so the jacket itself must have a waterproof function. In addition, because the jacket is designed for daily wear, ventilation is also very important when it is satisfied with the waterproof function. It's just that the fabric is waterproof. When it rains, the rainwater will seep in along the seams of the fabric. Therefore, it is necessary to seal all the seams with glue. So we can define the jacket as: the fabric is waterproof and breathable, and the seams are laminated. In fact, as far as the jacket is concerned, the first thing is to look at its rain and wind resistance, warmth and breathability to a certain extent. Whether the structural planning can satisfy the needs of outdoor activities. These are the most basic and important core functions of the jacket. Some of the other additional functions are mostly gimmicks that businesses come up with in order to make a selling point, and they should be discerned when choosing. For a good jacket, it is necessary to satisfy the following parameters first, and then talk about other things before it has meaning.
It's not unusual to encounter rain outdoors. For outdoor enthusiasts, a jacket with outstanding waterproof function is essential equipment. The most intuitive way to understand the strength of the waterproof function of a jacket is to look at its waterproof index. First, let’s briefly understand this index: its unit is millimeter water column pressure. The usual explanation is that when a 10000mm high water column presses on the fabric, 24 No more than 3 drops of water leaked from the fabric within an hour, so we assume that the waterproof index of this garment is 10000mm.
From the above calculation method, we can see at a glance that the higher the waterproof index, the stronger the waterproof function. Of course the higher the price. The key to choosing which type of jacket is based on your own practical needs, the most appropriate is the best.
Generally speaking, for urban travel and daily outdoor wear, the waterproof index is 3000mm to 5000mm; assuming that it is a quasi-professional outdoor walking, camping or crossing activities, the 6000mm to 8000mm waterproof policy of assault underwear is sufficient to cope with it; but Assuming that you need to go to the environment with more difficult natural conditions for professional mountain climbing, adventure and other outdoor activities, it is best to choose the assault underwear with a waterproof index of more than 10000mm.
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Some people may ask, isn't it about breathability? How did it become breathable? Here is an explanation. When we talk about air permeability, we think it is the ability to pass air. In fact, the ability to pass air is called air permeability in technical terms, not air permeability. [www.61k.com) And the index we need for wearing comfort is actually describing the degree of perspiration passing through the clothes to evaporate into the air, so “moisture permeability” is more accurate.
During human exercise, the surface of the skin will drop in temperature through the evaporation of sweat, and a certain amount of water vapor will also be generated. If the water vapor is not swept away, people will feel abnormally hot. Anyone who wears a rubber raincoat should understand it. Jackets are not rubber raincoats. Although they are waterproof, they have much higher requirements for comfort.