2025 Top 10 thermal underwear Suppliers in China

Nov 12, 2025

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Jana Horáková
Jana Horáková
Skiwear Retail Expert, passionate about promoting Alpine Pine's collection to skiing enthusiasts. Dedicated to creating exceptional shopping experiences for winter sports lovers.

Introduction to Thermal Underwear

Thermal underwear, also known as long - johns or long underwear, is a type of clothing designed to provide extra warmth in cold weather. It is typically worn as a base layer, beneath other clothing, and is made from materials that have excellent insulating properties. These materials can trap body heat and prevent it from escaping, keeping the wearer warm and comfortable even in extremely low temperatures.


Common materials used in thermal underwear include wool, cotton, synthetic fibers like polyester and nylon, and blends of these materials. Each material has its own characteristics. Wool is a natural fiber that is warm, breathable, and moisture - wicking. Cotton is soft and comfortable but may not be as warm as wool. Synthetic fibers are often lightweight, durable, and can be engineered to have specific properties such as moisture - management and stretch.


Thermal underwear comes in various styles, including full - length, half - length, and different neck and sleeve designs to suit different needs and preferences. It is widely used by people for outdoor activities such as skiing, hiking, and hunting, as well as for everyday wear in cold climates.


Top 10 Thermal Underwear Suppliers in China

1. Alpine Pro China Ltd.

Alpine Pro China Ltd. is a leading thermal underwear supplier in China. The company has a strong focus on innovation and quality. It was established with the vision of providing high - performance thermal clothing for outdoor enthusiasts and those living in cold regions.


Alpine Pro's R & D team is constantly exploring new materials and technologies to improve the functionality of their thermal underwear. They source high - quality raw materials from reliable suppliers around the world. For example, they use advanced synthetic fibers that are not only lightweight but also have excellent moisture - wicking capabilities. This means that even when the wearer sweats during physical activity, the underwear can quickly draw the moisture away from the body, keeping the skin dry and preventing the feeling of cold caused by wet clothing.


The company also pays great attention to the design of its products. Their thermal underwear is designed to fit well and provide a full range of motion. Whether you are skiing down a mountain or simply walking in the snow, the underwear will not restrict your movement. They offer a wide range of sizes and styles to meet the diverse needs of different customers.


In terms of production, Alpine Pro has a state - of - the - art manufacturing facility. They follow strict quality control procedures at every stage of the production process, from cutting the fabric to the final stitching. This ensures that every piece of thermal underwear that leaves their factory meets the highest standards of quality.


Features in Thermal Underwear:


  • Advanced Moisture - Wicking: As mentioned earlier, the use of high - tech synthetic fibers allows for efficient moisture management.
  • Lightweight and Insulating: The materials used are lightweight, so you don't feel weighed down, but they still provide excellent insulation.
  • Ergonomic Design: The underwear is designed to fit the body's natural curves, providing maximum comfort and freedom of movement.


Advantages:


  • Innovation - Driven: The company is always at the forefront of new material and technology research, which gives them an edge over their competitors.
  • Global Sourcing: Sourcing raw materials globally ensures the quality and uniqueness of their products.
  • Strict Quality Control: Their strict quality control procedures guarantee the reliability of their thermal underwear.


Website: https://www.alpinepro.biz/


2. Hengyuanxiang Group Co., Ltd.

Hengyuanxiang is a well - known and long - established brand in China. It has a rich history dating back to 1927. The company has a diversified product portfolio, including thermal underwear.


Hengyuanxiang's thermal underwear is often made with high - quality wool. Wool is one of their core materials, and they have a long - standing reputation for dealing with wool products. They source wool from the best sheep - raising regions around the world, ensuring the fineness and softness of the wool. The wool used in their thermal underwear is not only warm but also has natural antibacterial properties, which can keep the underwear fresh and odor - free for a longer time.


The company has a large - scale production base with advanced manufacturing equipment. They have a team of experienced craftsmen who are skilled in handling wool. From the spinning of the wool yarn to the knitting of the fabric, every step is carried out with great precision.


In terms of design, Hengyuanxiang combines traditional Chinese aesthetics with modern fashion trends. Their thermal underwear comes in a variety of colors and patterns, not only meeting the functional needs but also the aesthetic requirements of consumers. They also offer different thicknesses of thermal underwear to suit different seasons and climates.


Features in Thermal Underwear:


  • Wool - Based: The use of high - quality wool provides excellent warmth and natural antibacterial properties.
  • Aesthetic Design: Combining traditional and modern elements, the underwear looks stylish.
  • Seasonal Variety: Different thicknesses are available for different seasons.


Advantages:


  • Long - Standing Reputation: With a history of nearly a century, Hengyuanxiang has built a strong brand image and consumer trust.
  • Expertise in Wool: Their long - term experience in dealing with wool gives them an in - depth understanding of the material and how to make the best use of it.
  • Large - Scale Production: The large - scale production base allows them to meet the high - volume market demand.


3. Aimer Group Co., Ltd.

Aimer is a well - known brand in the lingerie and underwear industry in China. When it comes to thermal underwear, they bring their expertise in fit and comfort.


Aimer focuses on the female market for thermal underwear, although they also have products for men. Their thermal underwear is designed with a deep understanding of the female body structure. They use advanced body - mapping technology to ensure that the underwear provides targeted support and insulation in different parts of the body. For example, the areas around the abdomen and lower back, which are more sensitive to cold in women, are given extra insulation.


The company uses a blend of materials in their thermal underwear. They combine natural fibers like cotton for softness and comfort with synthetic fibers for moisture - wicking and stretch. This combination results in a product that is both comfortable to wear and functional.


Aimer also pays great attention to the details of their products. The seams are smooth and do not rub against the skin, and the edges are carefully finished to prevent irritation. They have a wide range of colors and styles, from classic to trendy, to meet the different fashion tastes of female consumers.


Features in Thermal Underwear:


  • Body - Mapping Design: Targeted support and insulation based on the female body structure.
  • Material Blend: Combining natural and synthetic fibers for optimal comfort and functionality.
  • Attention to Details: Smooth seams and well - finished edges for a comfortable wearing experience.


Advantages:


  • Female - Centric Design: Their in - depth understanding of the female market gives them an advantage in creating products that meet the specific needs of women.
  • Fashion - Conscious: Keeping up with the latest fashion trends, their thermal underwear is not only warm but also stylish.
  • Quality Craftsmanship: The high - quality craftsmanship ensures the durability and comfort of their products.


4. Bosideng International Holdings Limited

Bosideng is a well - known brand mainly for its down jackets, but it also has a significant presence in the thermal underwear market.


Bosideng's thermal underwear benefits from the company's expertise in cold - weather clothing. They use advanced insulation technologies in their thermal underwear, similar to those used in their down jackets. For example, they have developed a special filling material that can effectively trap air and provide excellent insulation.


The company has a strong R & D team that is constantly working on improving the performance of their thermal underwear. They conduct extensive research on different climates and user needs. This allows them to create thermal underwear that can be suitable for a wide range of cold - weather conditions, from mild winter days to extremely cold polar - like environments.


Bosideng also focuses on the durability of their products. The fabrics used in their thermal underwear are strong and resistant to wear and tear. They are also easy to care for, which is an important factor for consumers.


Features in Thermal Underwear:


  • Advanced Insulation Technology: Similar to that used in down jackets, providing high - level warmth.
  • Climate - Adaptable: Suitable for a wide range of cold - weather conditions.
  • Durable Fabrics: Strong and long - lasting materials that can withstand regular use.


Advantages:


  • Cold - Weather Expertise: Their long - standing experience in cold - weather clothing gives them an in - depth understanding of insulation and warmth.
  • Strong R & D: The R & D team's continuous efforts ensure the innovation and improvement of their thermal underwear.
  • Brand Reputation: Bosideng's well - known brand name gives consumers confidence in the quality of their products.


5. Metersbonwe Group Co., Ltd.

Metersbonwe is a popular fashion brand in China, and their thermal underwear combines fashion and functionality.


The company targets the young and trendy consumer market. Their thermal underwear has a modern and fashionable design. They often collaborate with well - known designers to create unique patterns and styles. For example, they may incorporate popular cultural elements or street - style designs into their thermal underwear.


In terms of materials, Metersbonwe uses a variety of synthetic and natural fibers. They focus on creating a balance between comfort, warmth, and style. The synthetic fibers provide moisture - wicking and stretch, while the natural fibers add softness.


Metersbonwe also has an efficient supply chain. They can quickly respond to market trends and bring new products to the market. This allows them to keep up with the fast - changing fashion preferences of young consumers.


Features in Thermal Underwear:


  • Fashionable Design: Incorporating trendy elements and collaborating with designers for unique styles.
  • Material Balance: A combination of synthetic and natural fibers for a good balance of properties.
  • Fast - Fashion Supply Chain: The ability to quickly introduce new products to the market.


Advantages:


  • Fashion - Forward: Their focus on fashion makes their thermal underwear appealing to young consumers.
  • Supply Chain Efficiency: The efficient supply chain allows them to meet the market demand in a timely manner.
  • Brand Awareness: Metersbonwe's well - known brand in the fashion industry helps to attract customers.


6. Semir Garment Co., Ltd.

Semir is another well - known brand in the Chinese clothing market, and their thermal underwear has its own characteristics.


Semir's thermal underwear is designed with a family - friendly concept. They offer a wide range of sizes and styles for different age groups, from children to the elderly. This means that a whole family can choose thermal underwear from Semir.


The company uses high - quality materials in their thermal underwear. They pay attention to the safety and comfort of the products, especially for children's thermal underwear. The materials are non - toxic and hypoallergenic, ensuring that they are suitable for sensitive skin.


Semir also has a strong marketing and sales network. They have stores all over China, which makes it convenient for consumers to purchase their thermal underwear. They also actively engage in e - commerce, which further expands their market reach.


Features in Thermal Underwear:


  • Family - Oriented Design: A wide range of products for different age groups in a family.
  • Safe and Comfortable Materials: Non - toxic and hypoallergenic materials, especially important for children.
  • Extensive Sales Network: Both physical stores and e - commerce platforms for easy access.


Advantages:


  • Family Appeal: The family - friendly concept allows them to capture a large market share.
  • Material Safety: Their focus on material safety gives consumers peace of mind.
  • Sales Network Advantage: The extensive sales network ensures high product availability.


7. Youngor Group Co., Ltd.

Youngor is a well - established brand in the men's clothing industry, and their thermal underwear is tailored to the needs of men.


Youngor's thermal underwear is designed with a focus on durability and functionality. They use high - quality fabrics that can withstand regular wear and washing. The materials are also chosen for their ability to provide long - lasting warmth.


The company has a high - end product line for thermal underwear. They pay attention to the details of the manufacturing process, such as the stitching and the finishing. The thermal underwear from Youngor has a classic and elegant design, which is suitable for men in different professional and social settings.


Youngor also has a strong after - sales service system. They are committed to providing good customer support, which includes product returns and exchanges, and answering any customer inquiries.


Features in Thermal Underwear:


  • Durable Fabrics: High - quality materials that can last a long time.
  • Classic Design: An elegant and timeless design suitable for various occasions.
  • Good After - Sales Service: A strong after - sales service system to support customers.


Advantages:


  • Men - Focused: Their in - depth understanding of men's needs gives them an advantage in creating products for the male market.
  • Quality Manufacturing: The high - quality manufacturing process ensures the reliability of their thermal underwear.
  • After - Sales Support: Good after - sales service can enhance customer satisfaction and loyalty.


8. Jiumuwang Co., Ltd.

Jiumuwang is a brand known for its men's trousers, but they also have a presence in the thermal underwear market.


Jiumuwang's thermal underwear is designed with a focus on fit and comfort for men. They use a special fabric technology that allows the underwear to have a good stretch while still maintaining its shape. This means that the underwear can fit the body well without being too tight or too loose.


The company also pays attention to the ventilation of their thermal underwear. They incorporate small ventilation holes in strategic areas of the underwear to allow air circulation, preventing the build - up of heat and moisture.


Jiumuwang has a strong brand image in the men's clothing market. Their reputation for quality and style in other clothing products also extends to their thermal underwear.


Features in Thermal Underwear:


  • Stretch and Shape - Retention: Special fabric technology for a good fit and shape maintenance.
  • Ventilation Design: Strategic ventilation holes for air circulation.
  • Brand Reputation: A well - known brand in the men's clothing market.


Advantages:


  • Fit - Centric: Their focus on fit makes their thermal underwear more comfortable for men.
  • Ventilation Innovation: The ventilation design is a unique feature that sets them apart from some competitors.
  • Brand Trust: The brand's good reputation can attract customers who are looking for reliable thermal underwear.


9. La Chapelle International Fashion Co., Ltd.

La Chapelle is a well - known fashion brand in China, and their thermal underwear is a combination of fashion and functionality.


The company targets the young female market. Their thermal underwear has a trendy and stylish design. They often follow the latest fashion trends in colors, patterns, and cuts. For example, they may use bright colors and bold prints to make their thermal underwear stand out.


La Chapelle uses a variety of materials in their thermal underwear. They experiment with different fabric blends to create unique textures and properties. The materials are chosen to be both warm and comfortable, and they also pay attention to the environmental friendliness of the materials.


The company has a strong online presence. They use social media and e - commerce platforms to promote their thermal underwear and interact with customers. This allows them to quickly understand customer feedback and make improvements to their products.


Features in Thermal Underwear:


  • Trendy Design: Following the latest fashion trends for young women.
  • Material Experimentation: Using different fabric blends for unique properties.
  • Online Engagement: Strong online presence for promotion and customer interaction.


Advantages:


  • Fashion - Focused: Their focus on fashion makes their thermal underwear popular among young women.
  • Material Innovation: The experimentation with materials can lead to unique and high - quality products.
  • Online Marketing: The strong online presence helps them to reach a wider audience and build a community of customers.


10. Shanghai Threegun Group Co., Ltd.

Shanghai Threegun is a time - honored brand in China, with a long history of producing underwear.


Threegun's thermal underwear is known for its affordability and quality. They use cost - effective materials without compromising on the warmth and comfort of the products. The company has a large - scale production base, which allows them to keep the production costs down.


The brand has a wide range of thermal underwear products. They offer different styles, such as long - sleeved and short - sleeved, and different thicknesses for different seasons. They also have a variety of colors and patterns to choose from.


Threegun has a strong distribution network. Their products are available in many supermarkets, department stores, and online platforms across China. This wide availability makes it easy for consumers to buy their thermal underwear.


Features in Thermal Underwear:


  • Affordable Pricing: Cost - effective products without sacrificing quality.
  • Product Variety: A wide range of styles, thicknesses, colors, and patterns.
  • Wide Distribution: Available in many retail channels.


Advantages:


  • Affordability: The affordable pricing makes their thermal underwear accessible to a large number of consumers.
  • Product Range: The wide variety of products can meet the different needs of consumers.
  • Distribution Network: The extensive distribution network ensures high product availability.


Conclusion

The thermal underwear market in China is highly competitive, with these top 10 suppliers each having their own unique features and advantages. Alpine Pro China Ltd. stands out with its innovation and strict quality control. Hengyuanxiang brings its long - standing reputation and expertise in wool. Aimer focuses on the female market and body - mapping design. Bosideng uses its cold - weather clothing expertise. Metersbonwe and La Chapelle are fashion - forward, targeting young consumers. Semir offers family - friendly products with a wide range of sizes. Youngor and Jiumuwang are tailored to men's needs. And Shanghai Threegun provides affordable and widely available thermal underwear.


These suppliers not only meet the domestic demand in China but also have the potential to expand their influence globally. With the continuous development of materials science and consumer demand for more functional and fashionable thermal underwear, these companies are likely to continue to innovate and improve their products in the future.


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