First of all, the concept of Jackets is very vague. Strictly speaking, there is no concept of a jacket in foreign countries. There are only hard shells (outer windproof and waterproof layer) and soft shells (which have certain windproof and waterproof functions while keeping warm) and fleece (that is, the fluffy one).
Outdoor clothing is generally a three-layer dressing method, that is, the innermost quick-drying wicking clothes (perspiration-wicking underwear, quick-drying clothes to avoid future loss of temperature when wet), and the middle thermal layer (static warmth, soft shell or fleece, The soft shell also has the function of keeping warm and sure to release the wind and waterproof. The general leisure line can only wear the soft shell and not the hard shell), and the outermost windproof and waterproof layer (hard shell, dynamic warmth, avoid wind cooling and wet body loss. The so-called three-in-one is to buy one get one free at the same time in accordance with the actual situation of the sky, combining soft shell fleece and hard shell at the same time, but the field generally does not advocate the inner fleece or soft shell Wear it through a combination of zipper and hard shell, so that the warm layer is not close to the body and air enters, and it cannot keep warm. It is best to disassemble and wear it.
Two layers, two and a half layers, and three layers are the classification of the hard shell laminated fabrics of the jacket. The two layers of glue separate the breathable mesh and the waterproof fabric, and the 3 layers (2.5 layers can also be counted as 3 layers) combine the mesh breathable layer with The waterproof layer is pressed together, and the waterproof function is from good to bad: three layers-2.5 layers-two layers. Weight: three floors-2.5 floors-two floors. Corresponding prices are also from high.
I usually wear quick-drying clothes for travel in spring, summer and autumn (alpine forests, sometimes 4000-5000 meters snow-capped mountains, about 20 degrees, and no need for a jacket to be very hot during the trek). When I feel cold, I add fleece or soft shell, under the wind. Rain and a hard shell. Hard shell waterproof and breathable above 8000 will have a breathable feeling, otherwise it will be no different from a raincoat. If the subject is below 4000 meters, a soft shell and a hard shell are sufficient. And it is best to use down jackets above 4000 meters.