1. Golds Golds. This is Gore's flagship product. Its scientific name is polytetrafluoroethylene (PTFE), and Gore-Tex is a porous film that needs to be laminated in a layer of nylon material before it can be used as a clothing fabric. Because its pores are smaller than water molecules and larger than gas, it is theoretically waterproof and breathable. Through the mesh lining of the suit, you will see the white colloidal film pressed on the nylon material. Three-layer gore-tex is a kind of double-layer material with a layer of breathable material added inside. Because the three layers of materials are tightly stuck together, the Gore-Tex film inside can't be seen. Its advantage is that the inner layer can better ensure the Gore-Tex film is not worn, but its disadvantage is that it is heavier than the two-layer Gore-Tex and its air permeability is slightly lower. Because most Gore-Tex is laminated on nylon, you feel like a layer. I think Gore-Tex products are waterproof. Generally speaking, Gore-Tex has a good comprehensive effect and is the most commonly used waterproof vent product at present. GORE-TEX fabric is the first and only durable waterproof, breathable and windproof fabric in the world. It breaks through the contradiction of incompatibility between waterproof and breathable, and has windproof function. Known as the "cloth of the century" in Europe and America. Clothes, shoes, hats and gloves made of it have been protecting American astronauts and countless explorers for many years, and will also fully protect your safety and comfort. 2.Sympatex Technology Co., Ltd. provides a wide range of products for functional clothing. Sympatex is the top outdoor fabric from Germany, and it is a polyether polyester polymer. After being compounded with fabric, it can be applied to all kinds of clothes and shoes in all kinds of casual clothes, shoes, gloves and other clothing and accessories, achieving the "three-in-one" effect of windproof, waterproof and breathable. This fabric is only 0.0 1 mm thick, which is extremely durable, thus providing all-weather protection to the body and feeling light and comfortable. It can let some gaseous substances pass through, and at the same time it is waterproof and windproof. Sympatex film is a non-porous polyester film. Water vapor molecules pass through the film through the humidity difference between the human body and the outside world, while water cannot. The breathability of the new product has passed the test of Hohenstein, an authoritative research institution, and obtained the highest rating of "excellent". Sympatex's non-porous structure ensures absolute waterproof and windproof, and at the same time it is not polluted by salt, grease, chemicals and detergents, and there is no blockage problem. At the same time, Sympatex film is 100% polyester, which is the most recyclable synthetic material. Because no solvent is used, the film can be discarded in the general garbage bin. This is a very environmentally friendly film. These are the advanced mainstream waterproof and breathable fabrics in the world. In addition, Omni-Tech from Colombia is also a common waterproof and breathable fabric. Hope to adopt. Thank you.