What are the important components of choosing a professional sleeping bag?

1. Fabric

Professional sleeping bag fabrics are quite demanding, which should be both wear-resistant and waterproof, and light and anti-drilling.

Wear-resistant: If it is not wear-resistant, it will run down after several times of use, and the warmth retention will be greatly reduced;

Waterproof: Outdoor camping, the water vapor exhaled by people will condense into water or thin ice when it is cold. If the sleeping bag fabric is not waterproof, it will wet the sleeping bag, and then affect the warmth retention effect;

Lightness and thinness: hiking is physically exhausting, and if it is still heavy, it will affect the durability of hiking.

Anti-drilling velvet: if you keep running velvet, the warmth of your sleeping bag will become worse and worse; Generally, high-density nylon above 200T is used, so that it won't run down.

In addition, the fabric should form a partition system, which can fix and evenly distribute fillers, and prevent cold spots, so that the sleeping bag has a good warm-keeping effect. Ps: The cold spots are not covered by fillers, and the cold air will drive straight in.

High-quality sleeping bags will be divided into several compartments in order to have a good warm-keeping effect.

2. Filler

The size, weight and durability of sleeping bags are closely related to fillers. There are two kinds of fillers, down and artificial cotton.

A, Down

At present, down is the best thermal insulation material. Of course, down sleeping bags are also divided into good and bad ones, which can be distinguished from three indicators: cashmere content, bulkiness and filling amount. In addition, goose down is generally better than duck down, with a higher fluffy degree and a smaller taste.

Down content: Down contains feathers and down, and the ratio of down to down is called down content. The higher the down content, the warmer it is.

Fluffy: the volume of an ounce of down. The higher the fluffy degree, the warmer it is and the better the compressibility.

Wool filling amount: the total weight of filled down. Generally, the heavier it is to keep warm, but too much filling will also reduce the bulkiness, so it should be considered comprehensively.

B, Artificial Cotton

Artificial cotton is not only heavy, but also its warmth retention will become worse and worse, and its service life is short, so camping at high altitude is not recommended. However, the price will be much cheaper than down sleeping bags.

3. Zipper

It's too important. I can't believe it when the zipper is broken: it's a long night, and you can't sleep at all.