We produce workwear in four classes of protection. We take into account air temperature, humidity and wind speed, depending on the climatic zones in Russia. When developing the regulations, the starting point was a two-hour stay of a person in the cold while maintaining health and efficiency.
The fourth or “special” class is clothing for the regions of the Far North. Particularly stringent requirements are imposed on it, especially for tailoring and materials. First of all, winter clothing for working in cold conditions should be as convenient and comfortable as possible, with a large number of internal and patch pockets.
For clothes of the first and second classes, the presence of a hood and collar without insulation is allowed. In the third and fourth grades, insulation on hoods is required. Winter clothing for sub-zero temperatures should be made of breathable fabrics such as cotton and polyester.
As a heater we use modern artificial materials such as Thinsulate, holofiber, Shelter, etc. They have proven themselves well because they do not add extra volume to clothing, do not make them heavier, and at the same time they do an excellent job of protecting from low temperatures.