Underwear Fabric Guide: Choosing the Right Material for Your OEM Collection
Will Lin — Founder & Sourcing LeadUpdated 14 Oct 20262 min read
Underwear Fabric Guide: Choosing the Right Material for Your OEM Collection
The best fabrics for OEM underwear are combed cotton (breathable, lowest cost), bamboo viscose (cooling, sustainable), modal (silkiest, premium feel), and cotton-spandex blends (best stretch). Your choice depends on the target market and retail price point.
Selecting the right fabric is the most critical decision in OEM underwear manufacturing. The fabric determines comfort, durability, cost, and market positioning. This comprehensive guide helps brand buyers navigate material choices.
Made from beechwood pulp, modal is 50% more absorbent than cotton with a silky hand feel. Ideal for luxury women’s underwear lines. MicroModal offers even finer fibers for ultra-premium products.
Unitex is based in Xiamen, Fujian Province, and develops these programmes with audited partner factories across the Xiamen–Quanzhou–Jinjiang knitwear cluster of south-east China.
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
The volume base — drier hand, lower cost, reorder predictability
Bamboo viscose
Moisture movement with a sustainability claim attached to the processing route
Modal
Softer hand and better drape at a higher cost; less abrasion-resistant at the same weight
Blends
Used for performance, and the blend ratio is what describes the fabric
Comparison basis
The same weight and blend ratio rather than the fibre name
Cost position
Cotton lowest, modal above it, bamboo depending on the certification route
Where the decision sits
The market and the price tier rather than a fibre preference
Claim requirement
The processing route named for any sustainability claim
Common error
Comparing fibre names at different weights
Verification
A washed production sample
Buyer checklist
Compare the options at the same weight and blend ratio.
Confirm the blend ratio to the percentage.
Specify the weight in g/m² per style.
Ask for the wash behaviour on the actual blend.
Confirm the processing route before any sustainability claim.
Compare on landed cost rather than on the fibre price.
Check the hand against the price tier.
Confirm the care instruction against the blend.
Check the gusset lining separately from the body fabric.
Approve on a washed production sample.
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.
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
They differ in hand, moisture behaviour and cost rather than in a ranking. Cotton is the volume base, bamboo viscose moves moisture well with a sustainability claim attached, and modal offers a softer hand at a higher cost — so the choice follows the market and the price tier. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).
Less than the fibre name suggests, because the weight and the blend ratio move the cost as well. That is why the comparison belongs at the same weight, since otherwise the difference being measured is the weight rather than the fibre. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).
They are usually what makes a fabric perform, and the blend ratio is what describes it. Two suppliers can both say cotton and deliver different cloth, which is why the ratio is specified to the percentage. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).
Not automatically — it depends on the property the range needs. A natural fibre that holds moisture once saturated suits an everyday range and suits an active one less well, so the property is what the decision turns on. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).
The market and the price tier rather than a preference. Each fibre justifies its position in a specific segment, and most successful ranges carry more than one rather than choosing between them. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).
On a washed production sample. The hand, the shrinkage and the seam behaviour all change with laundering, and those are the properties the specification is actually buying. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).
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