Tianshi's predecessor is a North American brand such as Sierra Designs, MHW, MOUNTAIN EQUIPMENT, etc., so it is also known as a "big factory" by domestic outdoor enthusiasts, in 2003 it opened the road of independent design and production of sleeping bags, but compared with foreign sleeping bag brands, Tianshi's accumulated technology is far from enough, and there is a lack of patented technology in down and fabric processing.
 
Many deficiencies, Tianshi can only rely on other soft conditions to make up for it, the richness of the type of sleeping bag is the best, mummy, envelope, single and double are covered, the use is more flexible, the splicing is free, the cut fits the Asian figure, and the most important thing is that the price is affordable and convenient to buy.
 
Tianshi's sleeping bags are high-end Nanga Bava and Aurora series, the middle end has polar bears and arctic wolves, and the entry-level is the fragrant fir series, as well as seals, penguins, fir, and cloud tours.
 
Nanga Bhava belongs to the most high-end series of Tianshi, the interior is filled with gray goose down, the lowest limit temperature is -40 °C, the filling amount accounts for 3/4, the exterior has a thickened wind strip, the bottom barrel is a one-piece design, the legs are adjustable and tight, suitable for winter camping, or extreme environment mountaineering, exploration, the pricing of 5199 yuan is also the highest level of domestic brands.
 
The Aurora series has a cool appearance, the fabric is 20D lightweight metallic nylon, excellent waterproof, and it is also filled with goose down, there are zippers on both sides, and both hands can be stretched out, but the yardage is not enough to subdivide, and there will be a large gap in the interior of women with smaller figures, which is not conducive to heat preservation, and the price is about 1000 yuan.
 
The Arctic Wolf series has a unique combination of down and cotton in the internal filling, the upper piece is filled with down, and the lower piece is filled with seven-hole cotton, which is breathable and also takes into account the warmth performance, and is divided from 400 yuan to 700 yuan according to the temperature scale. The fragrant fir series is more of an envelope sleeping bag, filled with polyester fiber, suitable for home use, or daily camping, the price is close to the people, basically about 100 yuan, and the sleeping bags can be freely spelled with each other, but the goods produced in different periods may be spliced unevenly.