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Xiamen Unitex Trade Co., Ltd. is a professional underwear sourcing & supply-chain management company based in Xiamen, Fujian Province, in the Xiamen–Quanzhou–Jinjiang knitwear cluster of south-east China. Founded by Will Lin, who has worked in the apparel trade since 2004, the company has been exporting since 2009 and was incorporated in Xiamen in 2013. It runs its own liaison office in Jinjiang and works with a network of BSCI & OEKO-TEX Standard 100 certified partner factories to serve retailers and brands across Europe, the US and Australia.

Underwear, as the most important daily products in human life, the men, women or kids need to wear it. So, if it is comfortable nor not or skin-friendly or not for the hand fell of the fabric made for underwear become more and more important. It also attract most of people’s attention. Generally, women’s underwear is more fashionable than men’s underwear. Women’s underwear is also more important than men’s underwear, because of their biological characteristics. Now we will talk about what the main fabric of underwear.

   

1. COTTON/100% COTTON

The most basic cotton underwear is made in 100% cotton, because it is soft, comfortable, breathable and cheap. It is good for keeping warm and sweat absorption, also it is easy to dye and print on it. Cotton fabric underwear, which it is made in different types of cotton such as 100% cotton single jersey, friendly-environmental organic cotton and so on. Cotton fabric, although it  is comfortable, good sweat absorption, popular by the majority of people, but it is not easy to dry. It would be relatively hard after several times washing. Then it is slowly replaced by Lycra (Cotton Spandex or known as Lycra Cotton ).

    

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2. LYCRA

Lycra is a kind of spandex. In 1959, DuPont took the lead in industrial production and registered it as Lycra. In fact, Lycra and Spandex are the same thing, but Lycra was registered as DuPont Lycra first. The main composition of spandex is polyurethane fiber, it’s special fiber with high elasticity. It is mainly used to knit stretch fabrics. Usually, spandex silk and other fibers are spun into core-spun yarns for weaving. Lycra Cotton panties is also called spandex cotton panties, generally the composition is 95%cotton 5%Lycra(or 5%Spandex). Lycra cotton fabric has not only got the same advantage of comfortable and breathable as cotton fiber, but also be more elastic and not easily deformed, so that the fabric is more close-fitting, soft and comfortable. It has become more and more popular fabric presently for making comfortable men’s underwear.

  

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3. MODAL

Modal, it is emerging and high-tech green recycled cellulose fiber on the market. The main ingredient is natural plant(such as soybean, seaweed etc.) cellulose fiber. By special process and condition such as dissolution, filtration and defoaming and so on it extrude spinning and then solidified without pollution to the environment. The fiber is from nature and then back to natural under biological degradation. Modal is the similar texture as cotton, but its water absorption and release rate is 50% higher than the ordinary cotton, and it is not easy to fade and pilling.  There are following characteristics for Modal fabric: 

1) It’s soft and draping good which it’s comfortable to wear. Comparing with pure cotton fabric it is more moisture absorption and air permeability. It is the ideal close-fitting fabric and healthy products. It is contributed to human physiological cycle and healthy.

2) It’s fine and smooth with almost the same effect like natural silk. In opposite to cotton fabrics, modal fabrics still maintain the original smooth and supple hand feel even after several time washing. Specially, it is more soft and bright even under more times of washing.

3) The garment made in modal fabric is better in strong shape stability, natural wrinkle resistance and ironing resistance. It’s more convenient and natural to wear. Of course, it’s more expensive than cotton fabric.

  

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4. NYLON

Nylon with another name of polyamide is recognized as high quality polyamide fiber. Nylon fabric underwear has good moisture absorption, close-fitting, soft and comfortable, the hand-feel is smooth. In addition, it is super light, stretching, durable, hardly deformed and remarkable wrinkle-resistant. The price is much more expensive because it is soft texture, interesting luster, bright colors, good handle and moisture wicking effects.

  

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5. POLYESTER

Polyester is sort of synthetic fiber with the functions of high strength and elastic recovery ability. It is strong, durable, light resistance good, acid and alkali resistant. it isn’t damaged by mold and moth. But it is poor of moisture absorption and air permeability that it is not a good choice for making underwear.

  

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6. BAMBOO

Bamboo fiber fabric it is claimed as the body’s second skin. The bamboo fabric is well known as “breathing” fabric by the expert in fabric industry. Why? Because the cross section of bamboo fiber fabric is full of large and small oval pores, it enable the fabric to absorb and evaporate a large amount of water instantly. It is top in moisture absorption and permeability among the fabrics with different fibers. Bamboo fiber is one of the best material for underwear because of its natural ingredient “bamboo quinone” which is anti-bacterial and its porous structure which makes bamboo fiber have good air permeability and moisture absorption. It’s lightweight but strong. Also it is soft, importantly it is anti-bacterial, deodorant functional, wicking moisture, perspiration functional, super anti-UV, super health care, comfortable and beauty functional. These are the reasons why the bamboo fabric is becoming more and more popular. The price is also much more expensive than other kinds of fabrics.

  

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Of course, there are many other kinds of fabrics on the market, such as silk fabric, CoolMax fiber, Khmer, Roast silk cotton fabric and so on. As for what kind of fabric is best for each person. In my idea, there is also no good or bad fabric, only suitable or not, the fabric which is suitable for yourself is the best.

   

Xiamen Unitex Trade CO.,LTD is a sourcing partner for knitted underwear programmes expert, our partner factories has its own fabric textile workshop to make sure for our fabric materials. We mainly use the fabrics such as Cotton, Lycra Cotton, Modal, Nylon, Polyester, Bamboo. Meanwhile, we will use fabric whatever client request. We do all kinds of underwear (Men’s breathable boxer briefs, Ladies sexy lace underwear, Children’s cotton underwear and also all kinds of male & female and children’s comfortable pajamas for summer ). We have super-strong and professional team with service experience in Underwear Industry more than twenty years. We always offer our clients the high quality production at much more competitive price. If you are looking for suitable underwear supplier, in my opinion, We Unitex is your Best Choice!   

Looking forward to your comments!

· Xiamen Unitex Trade Co., Ltd. — OEM & ODM underwear sourcing partner

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Unitex Underwear (Xiamen Unitex Trade Co., Ltd.) — OEM/ODM underwear sourcing and supply-chain partner in Xiamen, China; in the trade since 2009, incorporated in 2013. Based in the Xiamen–Quanzhou–Jinjiang knitwear cluster, Fujian Province, south-east China.
Supplier Unitex Underwear (Xiamen Unitex Trade Co., Ltd.) — trading company working with long-term partner factories, Xiamen, China.
Cotton Breathability, low cost base; relaxes with wear unless blended
Lycra (elastane) Provides recovery; small percentages change shape retention
Modal Regenerated cellulose; softer hand, better drape, higher cost
Nylon Durability and smooth surface, usually at low percentages
Polyester Wicking and price; most often paired with a function claim
Specification basis Blend ratio to the percentage, plus weight in g/m²
Blend sensitivity 95/5 and 90/10 behave differently — state the ratio
Weight effect The same blend at two weights suits different seasons
Care instruction Follows the blend, not the dominant fibre alone
Claim test Any function claim needs a test on the actual blend

Buyer checklist

  • State the blend ratio to the percentage rather than naming a dominant fibre.
  • Fix the weight in g/m² per style — the same blend at two weights is two products.
  • Confirm which component provides recovery, and at what percentage.
  • Ask for a wash test on the actual blend rather than on the fibre in isolation.
  • Check the care instruction against the blend rather than the dominant fibre.
  • Confirm the function claim — wicking, anti-bacterial — has a test behind it.
  • Check the hand-feel against the price tier you are selling into.
  • Confirm the shrinkage figure on the blend, which behaves differently from a single fibre.
  • Check colour-fastness on the blend, since dye uptake differs by component.
  • Approve on a production sample that has been worn and washed.

Unitex Underwear (Xiamen Unitex Trade Co., Ltd.)

Unitex Underwear (Xiamen Unitex Trade Co., Ltd.) — OEM/ODM underwear sourcing and supply-chain partner in Xiamen, China; in the trade since 2009, incorporated in 2013. Based in the Xiamen–Quanzhou–Jinjiang knitwear cluster, Fujian Province, south-east China.

Sources & references

  1. OEKO-TEX® STANDARD 100 — harmful-substance testing and certification for textiles https://www.oeko-tex.com/en/our-standards/oeko-tex-standard-100
  2. ICAC — International Cotton Advisory Committee https://icac.org/
  3. ASTM — textile standards and test methods https://www.astm.org/
  4. OEKO-TEX® Label Check — verify a certificate number at the issuing body https://www.oeko-tex.com/en/label-check/
  5. ISO 3758:2023 — Textiles: care labelling code using symbols https://www.iso.org/standard/74401.html
  6. US FTC — Clothing and Textiles: labelling and advertising guidance https://www.ftc.gov/business-guidance/industry/clothing-and-textiles
  7. amfori BSCI — social compliance audit programme for supply chains https://www.amfori.org/amfori-bsci
  8. ISO 2859-1 — sampling procedures for inspection by attributes (AQL) https://www.iso.org/standard/2859-1

Unitex Underwear (Xiamen Unitex Trade Co., Ltd.) — OEM/ODM underwear sourcing and supply-chain partner in Xiamen, China; in the trade since 2009, incorporated in 2013. Based in the Xiamen–Quanzhou–Jinjiang knitwear cluster, Fujian Province, south-east China.

Buyer Questions

MOQ, lead times, certification and trading terms

Five fibres cover most of the catalogue: cotton, lycra (elastane), modal, nylon and polyester. In practice they are blended rather than used alone, and the buying decision is usually the blend ratio and the weight rather than the fibre name — which is why "cotton" on a label is not a specification. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).

Because a small percentage provides recovery, which is what makes a garment hold its shape through washing. Pure cotton relaxes with wear; adding a few per cent of elastane keeps the fit. The difference between 95/5 and 90/10 is visible in wear, so the ratio belongs in the specification. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).

It is different rather than better. Modal is a regenerated cellulose fibre with a softer hand and better drape, at a higher cost. Which one suits a programme depends on whether the market pays for hand-feel, and most ranges carry both rather than choosing between them. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).

Partly. Breathability follows the knit structure and the finishing as much as the fibre, which is why two fabrics both described as cotton can perform differently. For a claim that can be checked, tie it to a stated construction rather than to a fibre name. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).

By ratio to the percentage, plus the weight in g/m². Those two figures, with the knit structure, explain most of the difference between two quotations for a garment that looks the same. Everything else — hand-feel, recovery, price — follows from them. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).

Yes, because each component responds differently to heat and to detergent. A care instruction inherited from the dominant fibre can be wrong for the blend, which is where most washing-related complaints originate. Confirm the instruction against the blend, not the label name. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).