The cold winter is really coming, and the temperature difference between morning and evening has gradually widened. In addition to coats such as cotton coats, down jackets, and woolen coats, warm inner layers must also be arranged.

When it comes to warm inner wear, we have to talk about sweatshirts and sweaters.

Sweatshirts and sweaters are must-have fashionable items in autumn and winter. Some styles are designed to be worn inside or outside, and both have a good thermal insulation effect. However, in terms of warmth retention, there have always been different opinions on who is better, sweaters or sweaters.

01 / The material and thermal insulation principle of sweatshirt

Sweatshirts can be divided into pure cotton sweatshirts, fleece sweatshirts, fleece sweatshirts and other categories.

Pure cotton sweatshirts are generally made of cotton and contain Lots of air, reducing heat transfer efficiency and maximizing warmth. Pure cotton sweatshirts are very popular because they are comfortable, soft, breathable, warm, hygroscopic, heat-resistant, and alkali-resistant. For many thin sweatshirts in spring and autumn, everyone prefers to buy pure cotton ones.

The material of fleece sweatshirts is mainly polyester fiber. Our common fleece sweatshirts are made of polyester fiber. Various fabrics such as velvet, polar fleece, coral fleece, etc. can be collectively called fleece sweatshirts. The hollow chemical fibers in the fleece sweatshirt fabric contain enough air in a certain insulation layer to maximize warmth. Because it is warm, breathable, lightweight, quick-drying, wear-resistant, stretchable, easy to compress, and easy to care for, it is favored by fashionable men and women in winter.

Fleece sweatshirts are a little more complicated, generally divided into three types, one The sweatshirt itself is made of fleece fabric, and the back of the fabric has a fleece treatment process. It can basically be understood as a fleece sweatshirt. One is a sweatshirt made of pure cotton or other fabrics + polar fleece lining. The two layers of fabric are not very thick, but together they will be very warm. It may need a little care when putting it on and taking off. There is also a sweatshirt cloth composite short plush fabric, which is also very popular in the market. Simply put, a fleece sweatshirt is a complex that superimposes the warmth and properties of N materials.

If you rank them in terms of warmth retention, they are roughly fleece sweatshirts > fleece sweatshirts > Pure cotton sweatshirt, but you must also consider the thickness of the fabric. Thickened pure cotton sweatshirts are as warm as thin velvet sweatshirts.

02 / The material and thermal insulation principle of sweater

The sweaters we often talk about are generally made of wool blends, and many people also call sweaters made of polyester fiber or other materials called sweaters.

Wool has good warmth retention but is easy to pill, shrink and not wear-resistant. It is difficult to take care of. During the production process, fiber materials such as cotton and polyester need to be added for blending to make the fabric more durable and easy to take care of. Wool-blend sweaters contain a large amount of air in the middle of the curly wool, which largely prevents cold air from entering and escaping from the outside, thus playing a very good role in keeping warm. Woolen sweaters have plump feel, good warmth retention, good elasticity and comfortable wearing. They are one of the must-have styles for fashionable men and women in autumn and winter.

Knitted sweaters made of polyester fiber or other materials are warmer than wool Blended sweaters are worse, but they are wear-resistant, not easy to pill, not easy to deform, and easy to care for, so they are also very popular.

There is also a fleece sweater that is made of wool blend or polyester fiber Add a layer of polar fleece lining to the material to improve the warmth of the sweater through double layer superposition, but it will be relatively heavy and not as light and soft as a pure sweater.

03 / Which one is warmer, a sweater or a sweater? How to choose?

When wearing a sweater or sweater alone, outdoors, the density of the sweater is relatively high and the wind resistance is relatively strong, while the pores of the sweater are relatively large and can be blown through by the wind. , so sweatshirts are more warm than sweaters. Indoors, there is not much difference in warmth between sweaters and sweaters, but sweaters are more comfortable and slimmer than sweaters.

If a sweatshirt or sweater is worn as an inner layer with a jacket, the sweatshirt is because The overall design is relatively loose, and you can choose a closer-fitting sweater.Because there is a jacket outside to block the wind, the difference in warmth between a sweater and a sweater will not be particularly big. Choosing a sweatshirt or a sweater can be determined based on personal preference and dressing style.

So, if you like to wear sweatshirts or sweaters, then from the perspective of warmth In terms of fashion, sweatshirts are more suitable. Furthermore, sweaters are easy to snag when worn alone, but sweatshirts basically don’t have this concern. If you like to wear it with a jacket, if it is a casual jacket, it is good to choose a sweatshirt or a loose sweater. If it is a business casual or more ladylike coat, choosing a slimmer sweater will fit better. Not everyone can wear it with a loose and casual sweater to create that unique charm. If paired with outerwear such as windbreakers and denim jackets, sweatshirts and sweaters are good choices.