Polyester Knit Fabric vs Nylon Fabric: Which Is Better for Your Apparel?

The decision between polyester knit fabric and nylon fabric usually happens at a sample table, not in a laboratory. A developer holds both swatches, checks the stretch, and asks about price. The answer determines whether the final garment is a mass-market team jersey or a premium compression baselayer.

Both materials are synthetic knits and both can be knitted into single jersey, interlock, or mesh structures. Their fiber chemistry, however, creates measurable differences in drying speed, abrasion resistance, UV behavior, and cost. This guide breaks down those differences using the technical specs that matter in production and wholesale purchasing.

Polyester Knit Fabric: Material Profile and Core Properties

Polyester knit fabric is a synthetic knitted textile produced from polyethylene terephthalate (PET) filament or staple yarn. It is engineered for fast drying, high color fastness, and cost efficiency across activewear, swimwear, and casual wear applications.

The knit structure, whether single jersey, interlock, rib, or mesh, determines the fabric's recovery and drape. The PET fiber itself provides chemical resistance. Polyester has a moisture regain below 0.4 percent, which means it absorbs very little water and releases it quickly. This is the technical reason polyester dries faster than nylon and resists water-based stains.

Polyester also responds well to sublimation and digital printing. Disperse dyes bond with the PET molecule at high temperature, producing vivid, washfast colors. UV resistance is another advantage: polyester does not yellow or degrade as quickly as nylon under sun exposure.

From a wholesale perspective, polyester is less expensive than nylon per meter, typically by 15 to 30 percent depending on denier and finishing. Recycled polyester (rPET) is widely available. At Haining Yitai Knitting Co., Ltd, polyester fabrics form a large share of the production catalog because of their balance between performance and cost.

Nylon Fabric: Material Profile and Core Properties

Nylon fabric is a synthetic knit made from polyamide filament yarn, distinguished by very high tensile strength, exceptional abrasion resistance, and a soft, smooth hand feel that is ideal for next-to-skin apparel.

Black Nylon Fabric for Comfortable Base LayersThis black nylon knit combines high tensile strength with a moisture regain near 4.5%, offering a soft, comfortable feel that suits base layers and compression garments.View Product →

Nylon has a moisture regain around 4.5 percent, roughly ten times higher than the polyester moisture regain. This small amount of absorption gives nylon a more comfortable second-skin feel, especially in base layers and compression garments.

The fiber also delivers superior stretch recovery. When blended with spandex, nylon returns to its original shape more reliably than polyester blends. This is why cycling jerseys, leggings, and compression sleeves often specify nylon-spandex blends.

On the downside, nylon has lower resistance to UV light. Prolonged sun exposure can cause the fiber to yellow and lose tensile strength. It is also more expensive, both in raw polymer cost and yarn production. Garment programs with a firm price ceiling usually steer buyers back toward polyester.

Direct Performance Comparison: Key Technical Metrics

The table below compares polyester knit fabric and nylon fabric across the six attributes that matter most in garment production planning.

When Polyester Knit Fabric Is the Better Choice

Choose polyester knit fabric when budget control, colorfastness under UV exposure, and rapid drying are the top priorities. This makes it the default for team sportswear, sublimated printed activewear, and pool swimwear.

• Team jerseys and fan wear where sublimation covers the entire surface
• Swimwear and beachwear where chlorine exposure is constant
• Activewear with intense perspiration and fast drying requirements
• Wholesale programs where the per-meter price must stay under a defined threshold
• Digital printed casual wear where color longevity matters

Chlorine resistance deserves special attention. Polyester degrades more slowly than nylon when immersed in chlorinated pool water, so pool swimwear usually specifies polyester knit. For beach fashion swimwear with a different value proposition, Haining Yitai Knitting Co., Ltd also offers a nylon-spandex swimwear fabric with a softer drape.

Nylon-Spandex Fabric for Soft Beach SwimwearComposed of 75% nylon and 25% spandex, this lightweight fabric provides high stretch and quick drying, making it a softer alternative for beach fashion swimwear.View Product →

When Nylon Fabric Is the Better Choice

Choose nylon fabric when the garment demands maximum tensile strength, premium stretch recovery, and the smoothest hand feel possible. Nylon is the right material for compression apparel, high-end activewear, and base layers that sit directly on the skin.

• Compression sleeves and leggings that need elongation paired with strong recovery
• Premium sportswear that justifies a higher unit price
• Underwear and base layers where skin-contact comfort is the primary driver
• Outer shell panels where abrasion resistance is a must
• Fashion swimwear worn outdoors where soft feel and drape matter more than chlorine exposure

Haining Yitai Knitting Co., Ltd has worked with both fibers for close to two decades, and the recommendation always follows the garment specification rather than a blanket preference.

Final Recommendation and Vendor Selection

There is no universal winner. Polyester knit fabric wins on cost, drying speed, UV stability, and print quality. Nylon wins on abrasion resistance, stretch recovery, and next-to-skin comfort.

For a buyer evaluating a specific order, the deciding factors are the garment's intended market, the climate where it will be worn, the required wash cycles, and the target price point. If the program is a budget-driven team sportswear collection, polyester knit is the safer decision. If the program is a mid-to-high-end activewear line with compression requirements, nylon is worth the premium.

FAQ

Is polyester knit fabric cheaper than nylon?

Yes. Polyester knit fabric is typically 15 to 30 percent less expensive per meter than nylon fabric at comparable denier and finish. The gap comes from the lower raw polymer cost of PET versus polyamide, which is why polyester dominates mass-market activewear.

Which dries faster, polyester or nylon?

Polyester dries faster. With a moisture regain below 0.4 percent, polyester releases moisture quickly. Nylon absorbs about 4.5 percent moisture, which softens the skin contact but slows the drying process.

Which fabric is more durable, polyester knit or nylon?

Nylon is more durable in tensile strength and abrasion resistance, and it withstands repeated stretching without thinning. However, polyester has better UV and chlorine resistance, so in a pool or sun-exposed environment, polyester may last longer in color and structure.

Can polyester knit fabric be used for swimwear?

Yes. Polyester knit fabric is preferred for pool swimwear because it resists chlorine better than nylon. For fashion swimwear worn at the beach or around the resort, nylon offers a softer feel and better drape. The choice depends on the bathing environment.