Basic sweat wicking layer (inner layer) - Outdoor in winter, you will still sweat a lot when walking, and you need a sweaty and warm underwear.

The sweat wicking underwear for outdoor use has the functions of fast drying and warmth preservation. It can lock body heat while expelling sweat, which is more suitable for outdoor activities in cold seasons.
Selection of base layer material - when selecting the base layer, pay attention to the certain temperature locking capacity of the material. Wool and synthetic materials are widely used in the base layer.
The mountain friends need to avoid choosing the basic layer of cotton materials, because cotton will absorb water without draining it and evaporating it. Instead, it will evaporate and take away more heat from the body.

Insulating layer (middle layer) - The insulating layer is selected for outdoor use in winter, which can not only supplement the windproof property of Shanyou shell, but also avoid the loss of warmth after the basic sweat layer is soaked.
A good isolation layer should have air permeability to help the water vapor in the foundation layer evaporate.

Selection of insulation layer - cotton padded clothes and thick wool can be used as insulation materials for Shanyou in winter, and down can also be used as insulation layer under colder environmental conditions.
According to the fleece thickness of the insulation layer, Polartec fabrics can be classified into 100, 200 and 300 thicknesses to adapt to various environments. The fine and slim fleece can cling to the base layer, which can provide better warmth preservation for mountain friends.
Wind proof shell layer (outer layer) - Outdoor in winter, the wind and snow are like knives. A hard shell or soft shell is a powerful "shield" for mountain friends to block snow attacks.
If you don't have the protection of a coat, such as only wearing a fleece, the winter wind and snow will quickly pierce your clothes, making you feel what is "cool through the heart".
The coat is a sharp weapon against wind, snow and water in winter, and the hard shell jacket and thick down jacket are indispensable.
Hard shell vest: As a technical shell, the hard shell vest is not only waterproof and breathable, but also windproof by virtue of irregularly arranged micro holes.
Thick down jacket: In windy and cold weather, thick down jacket can both protect against wind and keep warm. The fabric of thick down jacket generally has a windproof coating, which forms a warm air layer with fluffy, porous and high air content down, so it is warmer.

It is believed that the mountain friends who once did not wear gloves have had the experience of getting their fingers close to freezing; If you choose to put your hands in your pockets to keep warm, you will increase the risk of falling; With a mountaineering stick in hand, the fingers will become nowhere to hide.
Your fingers also need to be warm - the hand is at the end of the body, requiring the highest flexibility, and is extremely vulnerable to the wind chill effect.
In severe cold conditions outdoors, you need a pair of gloves that are both windproof, warm and waterproof.
Shanyou can refer to the double-layer gloves, that is, the outer layer is mostly made of waterproof, windproof and breathable film, while the inner layer is made of fleece.
A pair of flexible fleece or wool split finger gloves with a pair of warm gloves. In wet conditions, prepare a pair of spare gloves for emergency use.
Wear a hat to keep warm from the wind - in a cold environment, the lower the temperature is, the more heat is dissipated. About 40% of the body heat is emitted through the head and neck.
Wind proof fleece caps are a good solution for head wind protection and warmth preservation. Most of them have Windstop wind proof and breathable film, which can both prevent wind and sweat, and complement the warmth preservation function of fleece itself.
The head without hat protection is like a radiator. More than half of the body heat of the human body is lost through the head. Once the limbs feel cold, the amount of blood flowing to the limbs will be reduced to maintain the temperature of other important parts of the body. (Cited from the Bible of Mountaineering)
Similarly, in winter, mountain friends can also wear two layers of socks, namely thin socks inside and thick socks outside.
Double layer mountaineering socks, thermal upgrading - a thin and comfortable layer clings to the skin, and the second layer of thick socks provides warmth. You can choose wool or synthetic mountaineering socks.
The thickness of the second pair of socks depends on the size of the boots. If the boots are too tight, it is difficult for the thick socks to play a role in keeping warm.
At the same time, prepare spare socks, which can be replaced when wet, or put on when sleeping to achieve warm effect.
The camp down boots are warm to the heart - compared with the common down socks and down shoes of mountain friends, the double layered down boots are more suitable for keeping feet warm in cold environments.
Its outer layer is waterproof and its bottom is tough, and the inner layer is a high fluffy down filled sock. So, put on the outer layer, you can move around the camp, take off the outer layer, and you can keep your feet warm as spring when you stay in the tent.