Thermal Underwear Manufacturer in Vietnam

in Vietnam

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How Can I Serve You in Vietnam?

Hi, I built this webpage to promote Thai Son S.P Sewing Factory based in Ho Chi Minh City. They are a thermal underwear manufacturer based in Vietnam. I can introduce you to them and many other factories. Visit their website for more details.

My name is Chris, I have been working in the Vietnam Garment Industry since 2008. My expertise is advising fashion start-ups and sourcing factories. If you have any questions about Vietnam garment manufacturing then contact me here. Are you looking for a thermal underwear manufacturer based in Vietnam?
Thermal Underwear Manufacturer in Vietnam
Chris Walker Fashion Start-Up Consultant in Vietnam

Chris Walker
Ho Chi Minh City, Vietnam
VSource Co., Ltd.

What is thermal underwear?

Thermal underwear is a set of clothing, most often a long sleeve shirt and pair of long under-pants. They are sometimes called “long underwear” or even “long johns”. People wear them underneath the outer clothing in cold weather.

For maximum insulation, thermal underwear should be worn under other warm clothes that keep heat against the body instead of letting it escape into the air. On days where it is chilly but not extremely cold, a thermal shirt can be worn underneath a regular shirt, or even worn as a shirt by itself, since it is often cut and shaped like a normal shirt. Thermal clothing generally comes in neutral color as it is used as inner wear and not seen. In extreme cold, the outer layer should be wind and rain resistant so that thermal underwear can do their job of retaining heat.
Men Thermal Underwear

How does thermal underwear work?

Thermal underwear works on the principle of insulation. The material used in these clothes basically adds a layer of insulation between the body and the garment. The material absorbs minimal amount of moisture from the body, allows quick drying and regulates airflow in the insulating layer that is formed. The material is closely knitted so that the thermal wear retains the warmth produced by the body.

Cotton does not offer the insulating properties when it becomes wet. But wool allows insulation even when it is wet. Also, wool is a naturally occurring fire retardant, and is hence advantageous over cotton.

What is the fabric used for thermal underwear?

Polyester is a typical and common synthetic fabric used in the manufacture of thermal clothing. Sometimes the polyester material is blended with spandex to give extra stretch and durability. The fabric has a knit structure that is small and very tight, allowing good thermal and breathable qualities.
Thermal Underwear Manufacturer

Read -> Learn -> Then contact the factory.

I wrote these books during my first few years (@ 2008) working in the Vietnam garment industry. I write about basic knowledge and insider tips that I learned - to share with you.

If you are just starting out and need a jump start then I recommend you read my books before contacting factories.

For example, it is critical to know basic things like what is the difference between woven and knit fabric; what is different about viscose, rayon, tencel, modal and hemp; and what is the Acceptable Quality Level system?
Video Introduction
Podcast Introduction
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At present time, thermal underwear made from 80% polyester and 20% viscose fiber is used extensively in the cold countries. Because it’s thermal property is excellent and the pricing is not too expensive.

Another popular material that is now widely used in thermal clothing is Merino wool. This fine wool variety is perfect for under garments as it is both comfortable and efficient in its thermal qualities. Besides, Merino wool also has a better moisture absorption property than polyester fabric. Therefore it is sometimes preferred to the polyester type materials.

How to choose thermal underwear?

When you buy thermal underwear, just try on a set underneath your clothing. Remember to test different movements to make sure the material will not bunch up, roll or otherwise cause discomfort after a long day of wear. Buying a slightly smaller size might help you reduce slipping and bunching, as well as make it easier to fit the underwear underneath your blue jeans and other woven outerwear. However, you should be careful when choosing a smaller size because some might shrink slightly after washing.


We have 43 Kingtex NTD 67 12 Flat lock machines that first cut the ends of the seam evenly and then lay them on top of each other and stitch the seam.
Vietnam Flatlock Machines

Contact me today!

Production Consultant in Vietnam
Please give me details about your background and manufacturing objectives.

1. Which styles do you want to manufacture first?
2. Do you have tech packs?
3. Do you have any special factory requirements?
4. Have you produced before? If yes, then in what country?
5. What quantity per style per color do you order?
6. Does your company have a website?
7. Do you want to work with an agent or directly with the factory?
8. Do you plan to visit Vietnam?
Get Sourcing Advice in Vietnam
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Get Introductions to Factories

Services I Offer

Apparel Production Advice
Sewing Factory Introductions by Email
Garment Factory Visits
Tech Pack and Sample Creation
Fashion Start-up Business Planning

My Office

Hi my name is Chris. I prepare you to work with base layer manufacturers in Vietnam. My first experience with base layers was promoting Thai Son S.P sewing factory who bought fifty flat lock machines and spent a whole year training their staff and adjusting their machines to get it right. They made for brands like Voelkl and North Face. Since then I have met many other factories in Vietnam that have flat lock machines and experience producing base layer apparel. I can introduce you to them and help you every step of the way including quotation, sampling and production. I work with a team of merchandisers and sourcing assistants. If you need more than just a referral we can offer other support services:
• Consulting
• Factory introductions
• Factory visits
• Costing (getting a price quote)
• Design and merchandising
• Quality control
• Factory audits/assessment
• Hosting (renting a desk in our office)
• Staff recruiting
• eBooks

Thermal Underwear Manufacturer in Vietnam

Who We Are

This website belongs to
Thai Son S.P garment manufacturer based in Ho Chi Minh city Vietnam.

Thai Son S.P is a family owned FOB garment manufacturer that has been in the producing garments for 22 years. They have two factories.

They are currently doing a lot of thermal underwear and would like to find new customers.

What Thai Son Does

Thai Son S.P knits fabric, sources trim, sews your garments and delivers the finished goods to Saigon ports where your freight forwarding company picks up.

They follow your spec sheets and produce according to your designs. They offer one FOB price.

Thai Son describes themselves as a thermal underwear manufacturer in Vietnam.

Styles We Do Well

Their strength is men, women and children knitwear garments that have embellishments like embroidery, prints, appliqué, sequins or stones. They can make difficult fashion styles as well as base layer basics… any style as long as you use circular knit fabrics like jersey, interlock, pique, rib etc…

They have flat lock machines and can source Merino wool which is why they call themselves a thermal underwear manufacturer in Vietnam.

How about you?

Are you sourcing a thermal underwear manufacturer in Vietnam?

If yes, then contact us below.