Jacket is a kind of clothing mainly used for outdoor activities, and it is loved by outdoor lovers because of its all-weather function. The main features of jackets are waterproof, windproof, warm and breathable, which can provide protection in various harsh environments. There are many kinds of jackets, which can be divided into ultra-light, light and medium-heavy functional coats according to the use environment and requirements. Ultra-light weight jacket is light, suitable for fast marching, orienteering or hiking with low load and simple terrain. The middleweight functional coat is more durable and suitable for moderate-intensity hiking, cycling or low-altitude mountaineering. In addition, there are jackets specially designed for adventure. The design concept of this jacket is relatively simple, and it is usually considered as a faithful friend of explorers, and it can cope with all kinds of complicated and bad weather conditions. Generally speaking, jacket is an indispensable equipment for outdoor activities, which can play an important role in walking in the wind and rain or keeping warm in the cold environment.