The distinctive feature of a hooded sleeping bag is that it has a hat. This hat can provide extra warmth for the head. In the cold outdoor environment, about 30% of human heat is lost from the head, and the hat of sleeping bag can effectively reduce this part of heat loss. The shape and size of hats are usually different according to the overall design of sleeping bags. Some hats are designed loosely, which can accommodate users to wear warm equipment such as wool hats and increase the level of warmth. Some are close to the head design, which is tightened by adjusting the rope to better fit the contour of the head and prevent the heat from spreading out.
Except for the hat, the main structure of the hooded sleeping bag is similar to that of the ordinary sleeping bag, and generally includes an outer layer, an inner layer and a filling material. The outer layer is usually a wear-resistant and waterproof fabric, such as nylon or polyester fiber, which can resist external moisture, dust and slight friction. The inner layer is mostly soft and skin-friendly, such as cotton, which provides users with a comfortable touch. Filling materials are the key factors to determine the thermal insulation performance of hooded sleeping bags, such as down and chemical fiber cotton.
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Advantages of Warm-Keeping Performance of Hooded Sleeping Bag
Keeping the head warm is an important advantage of a hooded sleeping bag. Compared with the sleeping bag without a cap, it can provide users with more comprehensive warmth in cold environment. In extremely low temperature environment, such as camping in snow-capped mountains or high altitude areas, even if sleeping bags in other parts of the body have good thermal insulation performance, if the head is not effectively protected, the human body will still feel cold. The hat of hooded sleeping bag is like a ""warm cover"", which keeps the user's head in a warm environment.
When the user puts on the hat and adjusts it, a relatively closed space is formed inside the whole sleeping bag, which helps to gather the heat emitted by the body. This heat accumulation effect can keep the temperature inside the sleeping bag in a comfortable range, reducing the exchange of heat with the cold air outside. For example, on a cold night, even if the temperature outside the sleeping bag is close to zero, users can feel warmer in the hooded sleeping bag because of the effective accumulation of heat.
Suitable Scenes and Crowds of Hooded Sleeping Bag
Campers in cold environment: For people who often camp in cold areas, a hooded sleeping bag is an essential equipment. Whether camping in the snow in winter in the north or in the cold night in high altitude mountainous areas, hooded sleeping bags can provide reliable warmth. For example, when mountaineering enthusiasts climb the snow-capped mountains and rest in the camp at night, the hooded sleeping bag can resist the cold and strong winds on the mountains and ensure the comfort and safety of sleep.
Outdoor adventure enthusiasts: During the outdoor adventure, the environment is changeable and unpredictable, and the temperature may plummet at night. The good thermal performance of hooded sleeping bags can make explorers better cope with this situation. Moreover, in some remote wild environments, there may be no other extra warm-keeping facilities, so the hooded sleeping bag has become the key equipment to keep the body warm.
People who have high requirements for keeping warm: Some people are naturally afraid of cold, or they are prone to catch a cold because their heads catch cold during sleep. For these people who have high requirements for warmth, a sleeping bag with a hat is a good choice. Even if it is used indoors, such as in a room without heating or a cold basement, riding a hooded sleeping bag can provide enough warmth and make people feel comfortable in sleep.