Sleeping Bags

Sleeping bag is to use sleep bag. Currently on the market most of the sleeping bag has a comfortable temperature and temperature extremes logo, comfortable temperature all night sleep is the user a series of temperature, the highest and lowest limit. The maximum temperature is a comfortable feel hot, but not the kind of sleeping bag in hot sweat a lot, generally defined as a situation sleeping bag zipper open, arms on the outside, sleeping bags and head does not tighten the like.

Down because it has good thermal insulation properties in the early 19th century, is widely used in mattress stuffing, in Victorian England, women have even filled in the inner skirt down to keep warm warm, but down the processing and use of technology in the 19th century began to develop medium-term, long record of down sleeping bags for the United Kingdom ALFRED MUMMERY expedition team in 1892, the prototype developed from Alpine club of sleeping bags, furniture manufactured by the British company, but this is not the true sense of the production Business sleeping bag. 1890 Norway ajungilak company began commercial production of sleeping bags, sleeping bags during this period by kapok filling. Until the 1820s, sleeping bags are special products, but because of the growing outdoor market demand, more companies began to design and manufacture sleeping bags. Based on Himalayan expeditions and the rise of climbing, the beginning of the 19th century, 30 years of continuous development and improvement of the design and production of sleeping bags, this time the birth of the body can be tightly wrapped mummy-style sleeping bag, British mountaineer With this sleeping bag also successfully boarded Everest. Since the industrial revolution and the development of manufacturing and chemical industries, synthetic fibers begin mass production due to synthetic fiber with excellent thermal performance also began to be widely used in the production of sleeping bags.
19 thirties, hiking and camping life became popular in Europe, the demand for outdoor equipment began rising up. Sleeping bag into a commercial product, marked the beginning of commercial production at the time of purchase in order to facilitate customers can choose according to their needs in the sleeping bag, marked the beginning of the temperature scale is very simple, only the summer and winter use three quarters distinguish such distinguish rough way, only selected according to the approximate temperature. Later, some brands began to give two sleeping bag temperature scale values: comfort temperature and temperature extremes.
For many years, sleeping bag temperature scale has formed a number of different criteria for the classification of each standard has its supporters and opponents, and these standard test methods have scientists from the UK, France, Germany, Norway, Switzerland and the United States and other countries development and improvement of it. Although different brands of sleeping bag is marked by the establishment of its own recommendations on the basis of the detection temperature comfortable, but this is standard in most high-quality sleeping bag brands it is similar. Sleeping bag sellers and buyers understand marked on the sleeping bag comfortable temperature just build out the test results in the ideal case, when in actual use is often a comfortable temperature a few degrees higher on.

Parapet Wall
Early sleeping bags and rarely provided Wall parapet. It was found that the use of catchy part and zipper will leak out, it is not conducive to warm. So the increase in the design of the parapet (or called off collar collar chest tightening collar, after tightened to prevent cold air from entering the neck) and side wall (sandwich zipper wind - cotton sandwich windproof zipper inside, to prevent cold air from the zipper enter). So warm sleeping bags tend to be more perfect.
Pinch strips
Whether open or semi-open sleeping bag, you need to install zippers, while sleeping at the switch, often biting zipper fabric, very easy to use, will fix broken or chewed fabric fastener. In order to solve the contradiction between cloth zipper bite, thus increasing the pinch strips (inside zipper PP with a layer of thin hard, eat cloth to prevent the zipper).
Double zipper
Early sleeping bag is usually a single zipper, open the top-down, bottom-up closed to the lower part of the sleeping bag temperature can not be adjusted, and the double-headed zipper improved, so can switch up and down sleeping bags, people use adjustable upper and lower ventilation, so as to adjust the temperature inside the sleeping bag. Double slider zipper;
Mono sliced
Sleeping bags in the structure can be divided into single or double slice slice. Due to the double slicing soft, warm and better, so commonly used in high-grade sleeping bag double slice structure. Indeed for the ministries of human warmth requirements are not the same, for example: the tip of the foot part of the cycle, and sometimes should be strengthened more warmth, so some high-grade sleeping bag design tip, so that the foot more protection.

Sleeping Bag - SP-1326-A