Best Knitted Fabrics for Innerwear: Types, Differences and Uses

Choosing the right knitted fabric is essential for manufacturing comfortable, durable and well-fitting innerwear. The fabric affects softness, breathability, stretch, support and overall comfort.

Different knitted fabrics are used to make men's underwear, vests, women's panties, bras, camisoles and shapewear. Understanding their differences helps clothing manufacturers, wholesalers and buyers select the right material for each product.

In this guide, OneZeros explains the common types of knitted fabrics used in innerwear manufacturing and how to choose the right option.

What Is Knitted Fabric?

Knitted fabric is made by interlocking loops of yarn. This construction often provides flexibility, softness and stretch, making knitted fabrics suitable for garments worn close to the body.

Knitted fabrics can be manufactured using cotton, polyester, nylon, viscose, elastane or combinations of these fibres.

For innerwear, the choice depends on the required stretch, moisture management, thickness, fit and intended use.

Common Types of Knitted Fabrics Used for Innerwear

1. Single Jersey Knit

Single jersey is one of the most commonly used knitted fabrics for everyday innerwear. It has a relatively smooth front surface and a different loop structure on the back.

Key features:

• Lightweight and comfortable.

• Available in cotton and cotton-elastane blends.

• Suitable for everyday clothing worn close to the skin.

• Stretch and recovery depend on the yarn and fabric construction.

Common uses:

• Men's briefs and underwear.

• Women's panties.

• Cotton vests and camisoles.

• Innerwear linings.

Best choice: Cotton single jersey for softness, or cotton-spandex jersey when additional stretch is required.

2. Rib Knit Fabric

Rib knit fabric features alternating knit and purl columns that create visible vertical ribs. It is often more stretchable than plain single jersey.

Key features:

• Good stretch and recovery.

• Flexible and comfortable fit.

• Available in different rib structures, including 1×1 and 2×2.

• Suitable for fitted garments and garment edges.

Common uses:

• Men's vests and baniyans.

• Women's camisoles.

• Stretchable innerwear.

• Waistbands, neck openings and binding.

Best choice: Cotton rib knit for comfortable vests and camisoles.

3. Interlock Knit Fabric

Interlock is a type of double-knit fabric with a smooth appearance on both sides. It is generally more stable and thicker than comparable single jersey fabric.

Key features:

• Smooth surface on both sides.

• Comfortable feel.

• Good dimensional stability when properly constructed.

• Often provides a more substantial fabric feel.

Common uses:

• Premium underwear.

• Baby innerwear.

• Soft cotton vests.

• Comfortable everyday garments.

Best choice: Cotton interlock when a smooth, stable and slightly thicker fabric is desired.

4. Nylon or Polyamide-Spandex Knit

Nylon, also called polyamide, is commonly blended with spandex to produce smooth, stretchable fabrics for close-fitting garments.

Key features:

• Smooth surface.

• High stretch potential.

• Lightweight construction options.

• Generally dries faster than cotton of similar weight.

Common uses:

• Women's panties.

• Bras and lingerie.

• Seamless-style underwear.

• Stretchable performance innerwear.

Best choice: Nylon-spandex when smoothness, stretch and close-fitting performance are priorities.

5. Power Mesh and Powernet

Power mesh and powernet are engineered stretch fabrics designed to provide varying levels of firmness and support. They are commonly made with nylon or polyester and elastane.

Key features:

• Stretch with varying levels of compression.

• Mesh construction.

• Available in different support strengths.

• Requires careful selection for comfort and garment design.

Common uses:

• Shapewear.

• Bra wings and support panels.

• Control underwear.

• Lingerie construction.

Best choice: Powernet for products requiring controlled stretch and support rather than ordinary soft cotton comfort.

Which Knitted Fabric Is Best for Each Innerwear Product?

The most suitable fabric depends on the garment design, intended fit, fibre quality and manufacturing requirements.

Cotton vs Cotton-Spandex for Innerwear

Cotton and cotton-spandex are both widely used for everyday innerwear, but they offer different characteristics.

100% Cotton Knit

• Soft and absorbent.

• Suitable for comfortable everyday garments.

• Does not have the same elastane-based stretch and recovery as cotton-spandex.

• Can shrink depending on the yarn, finishing and washing conditions.

Cotton-Spandex Knit

• Combines cotton with elastane for added stretch.

• Helps garments fit closely to the body.

• Can improve shape recovery when properly constructed.

• Requires suitable washing and heat-control practices to protect elastane.

For underwear that needs a close fit, cotton-spandex single jersey is often a useful starting point. For less fitted garments, 100% cotton may also be suitable.

Recommended GSM for Innerwear Fabric

GSM means grams per square metre and indicates fabric weight. The appropriate GSM depends on the product, yarn, knit structure, opacity and intended comfort.

These are indicative purchasing ranges, not fixed industry standards. Always evaluate a physical fabric sample before placing a bulk order.

How to Choose the Right Innerwear Fabric

Consider the following points before buying fabric for manufacturing:

1. Fibre composition: Check whether the fabric is 100% cotton, cotton-spandex, nylon-spandex or another blend.

2. GSM: Select the appropriate weight for comfort, opacity and durability.

3. Stretch and recovery: Check whether the fabric returns to its original shape after stretching.

4. Fabric width: Confirm usable width and whether the fabric is supplied open-width or tubular.

5. Shrinkage: Test the fabric after washing to estimate dimensional changes.

6. Colourfastness: Check whether the colour remains stable during washing and rubbing.

7. Skin-contact comfort: Assess softness, seams, finishes and suitability for prolonged wear.

8. Price and minimum order quantity: Compare suppliers using the same composition, GSM, width and quality requirements.

Frequently Asked Questions

1. Which knitted fabric is best for men's underwear?

Cotton-spandex single jersey is a common choice for stretchable briefs. Cotton jersey can also be used for less fitted styles.

2. Which fabric is best for women's panties?

Cotton-spandex jersey is widely suitable for everyday panties. Nylon-spandex is another option for smooth, stretchable designs. The gusset lining should be selected with comfort, absorbency and skin contact in mind.

3. Is rib knit good for innerwear?

Yes. Rib knit provides stretch and recovery, making it useful for vests, camisoles and selected fitted innerwear designs.

4. What is the difference between jersey and interlock?

Single jersey generally has a distinct front and back and is often lighter. Interlock is a double-knit construction that usually looks smoother on both sides and can provide greater stability.

5. What does GSM mean in innerwear fabric?

GSM stands for grams per square metre. It measures fabric weight per unit area and helps buyers compare fabric thickness and weight, although it does not determine softness or quality by itself.

6. Can 100% cotton be used for underwear?

Yes. Cotton jersey is commonly used for underwear. Cotton-spandex is preferred when additional stretch and close-fitting recovery are required.

Conclusion

Selecting the right knitted fabric is an important step in producing comfortable, functional innerwear. Single jersey is widely used for underwear, rib knit is suitable for stretchable vests and camisoles, interlock offers a smooth and stable structure, and nylon-spandex or powernet supports specialised lingerie and shapewear applications.

Compare fibre composition, GSM, stretch recovery, shrinkage and fabric quality before purchasing wholesale materials.

Explore clothing and everyday essentials at OneZeros and learn more about fabrics to make informed clothing choices.