Compared with most foreign brands, the founders are senior outdoor sports enthusiasts with many years of mountaineering experience, and have a professional understanding and practical design for the product, black ice and Tianshi are much inferior, and lack of innovation and professionalism in the practical design of the product, which is also a big deficiency of domestic brands.
 
The sleeping bag of black ice pursues the fluffiness and down content of down, and the down content of black ice's products is basically more than 90%, and the down filling amount is the standard for the division of the series. At present, there are five series of A, B, E, G, and Z, the difference is the type of down and the degree of expansion, and the design is the traditional mummy style, with a price of up to 2,000 yuan.
 
If it is the first time to go outdoor camping, you can choose A and B series, all of which are filled with duck down, different color styles can be spliced with each other, and the price varies with the temperature scale, about 700 to 1000 yuan. In the harsh environment of snow camping, alpine climbing or adventure activities, the Z series is most suitable, however, the use of better heat preservation goose down filling, the expansion degree of 700 and 800, saddle-shaped neck circumference to block the cold air outside, the side wall also has a double choke strip, the chest and back vertical velvet road, the internal lining structure, the three-dimensional foot compartment is very comfortable, the price fluctuates around 2000 yuan. You can buy it in the official flagship store or try it out at an outdoor store.