山东三所新材料技术有限公司

(1) Mammy style, also known as Mummy style or Mummy style, is a sleeping bag with wide shoulders and narrow feet. The shoulder width is generally 75 to 85 centimeters, and the foot width is 35 to 45 centimeters. The Mami style sleeping bag is a sleeping bag shape that can achieve good warmth retention under the same weight, suitable for use in cold seasons;

（2）信封式睡袋顾名思义，肩布和脚部一样宽，像个信封，这样的睡袋比较宽松，适合夏暖季节和体形宽大的人士；

(2) As the name suggests, the envelope style sleeping bag is as wide as the shoulder cloth and feet, resembling an envelope. This type of sleeping bag is relatively loose and suitable for people with warm summer seasons and a large body shape;

（3）混合型睡袋式前两者的结合，大部分是信封睡袋加上一个玛咪式的帽子。

(3) The combination of the first two in the hybrid sleeping bag style is mostly an envelope sleeping bag with a Mami style hat.

国际流行的睡袋是小方帽，人体流线型（宽的部位不在领口，而在肩肘部）。以前的大圆帽既增加重量，又不利于保暖。有人把这种新款睡袋称为“啤酒桶”，也有人把它称为“蚕茧式”，其实都不过是前两种睡袋的异化，它在设计上吸取了前两款睡袋的优点，摈弃了前二者的不足，在携带及使用的舒适性上都有了很大的提高。

The internationally popular sleeping bag is a small square hat with a streamlined body shape (the wide part is not at the collar, but at the shoulders and elbows). The previous round hat not only increased weight but also was not conducive to warmth preservation. Some people refer to this new type of sleeping bag as a "beer bucket", while others refer to it as a "cocoon style". In fact, it is just a differentiation of the first two types of sleeping bags. It draws on the advantages of the first two types of sleeping bags in design, discards the shortcomings of the first two, and greatly improves the comfort of carrying and using.