Note that there are two types of waterproof and breathable fabrics: water-resistant and waterproof, the former is divided into two types: fiber/cloth type (not windproof but good breathability) and permeable type (windproof but not good permeability); the latter is generally permeable membrane type, two or three layers, windproof, two-layer ratio three layers It is soft and breathable, and the three layers are relatively strong.

    Water-resistant or highly water repellent cloth will seep water when pressure is applied to it, such as when you sit on a wet stool in trousers of such materials. The famous brands of this fabric are:

H2OFF (fiber type), Azeculla, Toraydelfy (permeable type); W.L. Gore & Associates: Activent (permeable type) and Patagon Ia's H2Ho, etc.

The development of waterproof began in the late 1970s, and the current second-generation products are completely waterproof and windproof and maintain good breathability. However, ready-to-wear made of this fabric is not necessarily completely waterproof, mainly because of water seepage in seams or zippers. To ensure that ready-to-wear is completely waterproof, you need to press glue at all seams (good ready-to-wear uses waterproof strips), which requires a lot of labor and cost, which is why such clothes are so expensive. 一. Famous brands of this fabric are: Toray Industries' Dermizax (stretchable film), Entrant GII-XT; Burlington's Xalt; Malden Mills' Po The lartec series; another is the Gore-Tex of W.LGore & Associates that everyone is familiar with. I know that there is also a very famous brand called Sympatex, but I don't know exactly which one it is.

     It should be emphasized that the use of waterproof and breathable materials does not necessarily guarantee the comfort of the wearer. According to the principle of moisture transmission, breathability and comfort largely depend on the difference between temperature and humidity inside and outside the clothes. The drier and colder the outside, the better the ventilation effect, the increase of external temperature and humidity, and the transmission of moisture.

    It will also slow down, stop and even transmit moisture to you in turn.