Quality Warm Heavy Winter Jackets

HomeBlogBlog In anticipation of winter, everyone is looking for warmer clothes, and every autumn crowds of people come to the Sport-Marathon store with the question: "What is your warmest jacket?" The unequivocal answer to this question, perhaps, would be a down jumpsuit for high-altitude mountaineering, but such an extreme option is not suitable for everyone. Therefore, you have to dive into the intricacies of choosing a warm jacket. What keeps us warm and what affects the warmth of the jacket Let's start with an important point. Clothes by themselves do not warm us, unless we are talking about things with built-in thermal elements. Its task is different - to preserve the heat that our body produces, and to isolate it from the cold of the external environment. In theory, the best heat insulator is vacuum, since its thermal conductivity is zero. But it is not yet possible to create a layer of wearable vacuum around oneself, so air remains the main heat insulator. Its thermal conductivity is not much higher than zero, and the task of the warmest jacket is to Quality Warm Heavy Winter Jackets  keep the layer of air heated by the body as efficiently as possible. And here we will analyze how she succeeds. A warm layer of air does not allow a good insulation to evaporate, the correct cut and some details in the design of the jacket itself, which do not allow cold air to penetrate from the outside. If you prefer video to text, watch this video, the article is based on it. For air to function as an effective heat insulator, it must be in a state of relative rest. Otherwise, it will constantly cool itself and cool us due to convection. And the task of any insulation is to retain warm air between its fibers, preventing it from intensively mixing with cold air. Today, despite the emergence of a whole family of synthetic fibers, when the question is raised about the warmest clothes, natural goose and duck down is still most often used as a heater. The beauty of down as a heater is that, with a minimum weight, its fluffs capture the maximum volume of air and hold it back by the mass of their fiber plexuses. Each fluff consists of many thin filaments diverging in different directions, on which the finest villi are located. With them, the fluffs adhere to each other and, forming an elastic mass, they well catch and retain air © zoon.ru Depending on the quality, the down can vary greatly in its heat-insulating properties: clusters of downs of the same weight can hold different volumes of air. The larger it is, the warmer the down mixture. This parameter is expressed through the numerical value of Fill Power (FP), which varies in the range of 500-1000 units. The higher this number, the more air 1 ounce of down can hold. This means that a down jacket with 100 grams of down with the FP 900 will be much warmer than a jacket filled with 100 grams of down with the FP 600. In the clothing industry, it is considered good practice to use fluff with a Fill Power value of at least 550. And the warmest fluff is considered to be FP 800 and above. But it is not cheap, and therefore it is used either in top-class urban clothes, or to create the lightest and most compact warm things, for example, for mountaineering. Difference in Fill Power of different fluff samples. The weight of the down mixture is the same in each flask, but the filled volume is different © Prauden Of course, the warmth of the jacket is influenced not only by the quality, but also by the amount of down. For example, a thick city jacket stuffed with half a kilogram of down with the FP 600 will be noticeably warmer than a thin sweater with 150 grams of FP 800 down.On the other hand, just 400-450 grams of down with the FP 800 will be enough to warm the park for autonomous winter expeditions. , in which it will be warm and at -40 ° C. Alas, manufacturers do not always indicate the mass of used down. In this case, you can compare jackets by their final weight, if other parameters such as insulation, fabric, size and abundance of details are approximately equal. In this case, the heavier model will be warmer. Duck or goose down? Is there a difference? https://jiji.co.ke/nairobi-central/clothing/quality-warm-heavy-winter-jackets-dsPVNaKqdXLJHATFnxEMqhIz.html