Nylon vs Polyester: The Short Answer
In the nylon vs polyester decision, nylon is usually stronger and more abrasion resistant, and it takes up a little more moisture. Polyester is more stable, resists sunlight and creasing better, dries very quickly, dyes to long-lasting colours, and is generally cheaper and more widely used. Most clothing uses polyester, and nylon is chosen where toughness, a silky hand or very fine light fabrics matter.
Both are synthetic thermoplastic fibres, which means they are made from polymers that melt and can be shaped with heat. That shared origin explains why they behave alike in many ways, from quick drying to sensitivity to hot irons. The differences come from the polymer chemistry and show up in strength, moisture, dyeing and ageing.
The tiles show the technical starting points for any nylon vs polyester discussion. The sections below explain what they mean for fabric choice and garment performance.
What Nylon and Polyester Are
Nylon is the common name for a family of polyamide fibres. In clothing the two most common types are nylon 6 and nylon 6,6, which differ slightly in chemistry and in properties such as melting point and dye behaviour. Suppliers often say simply nylon or polyamide, and labels generally use the fibre name polyamide, so check current UK labelling rules for the wording you need. Polyester is made from the polymer polyethylene terephthalate, usually abbreviated to PET. It is the same family of polymer used in many drinks bottles, which is why recycled bottles can be turned into polyester fibre.
Both fibres are produced by melting the polymer and pushing it through fine nozzles to form continuous filaments, which can be used as they are, textured for bulk and stretch, or cut into staple lengths and spun like cotton. Staple polyester is what makes poly-cotton blends possible. Nylon is more often used as continuous filament in smooth, strong, light fabrics, with staple nylon used in smaller quantities such as reinforcement in blends.
Nylon vs Polyester Head-to-Head Comparison
The table summarises typical behaviour. Real fabrics vary with yarn type, construction, finishing and coating, so use it as a framework for questions to a mill or factory, not as a specification.
Nylon vs polyester at a glance
| Factor | Nylon (polyamide) | Polyester (PET) |
|---|---|---|
| Strength and abrasion | Very high; usually the tougher of the two | High; slightly less abrasion resistant |
| Handfeel | Often silkier and smoother | Ranges from slick to soft and brushed |
| Moisture absorption | Low, but higher than polyester | Very low |
| Drying speed | Fast | Very fast |
| UV and sunlight | Can weaken and fade with long exposure | Better resistance to sunlight |
| Wrinkle and shape | Good elastic recovery | Very good shape retention and wrinkle resistance |
| Dyeing | Acid dyes; bright, deep colours | Disperse dyes at high temperature; long-lasting colours |
| Pilling | Can pill in staple or blended fabrics | Prone to pilling in staple fabrics |
| Cost level | Usually higher | Usually lower |
| Recycled options | Available, with a smaller supply base | Widely available |
General characteristics. Yarn, construction and finishing can shift any single row.
Moisture, Static and Comfort
Moisture regain is the standard way to compare how much water a fibre absorbs at normal conditions, expressed as a share of dry weight. The values below are approximate published reference figures. Cotton is included to show the gap between synthetics and natural fibres.
Approximate moisture regain
% of dry fibre weight
Approximate published reference values at standard conditions; exact figures vary by source and test method.
Because polyester barely absorbs water, it moves moisture along its surface and dries very fast, but it can feel clammy and hold odour in dense constructions. Nylon absorbs a little more, which can help comfort slightly, but both synthetics can build static and hold odour unless treated. Fabric construction and finishing change comfort at least as much as fibre choice.
Indicative Performance Ratings
The ratings convert the typical characteristics into a simple five-point scale. They are indicative only, and a well-made polyester can outperform a poor nylon on any single row.
Nylon, polyester and a poly-cotton blend, indicative
1 dot = low, 5 dots = high
| Nylon | Polyester | Poly-cotton | |
|---|---|---|---|
| Strength and abrasion | ●●●●● | ●●●●● | ●●●●● |
| Silky or soft handfeel | ●●●●● | ●●●●● | ●●●●● |
| Moisture absorption | ●●●●● | ●●●●● | ●●●●● |
| Quick drying | ●●●●● | ●●●●● | ●●●●● |
| Sunlight resistance | ●●●●● | ●●●●● | ●●●●● |
| Wrinkle resistance | ●●●●● | ●●●●● | ●●●●● |
| Cost level (5 = more expensive) | ●●●●● | ●●●●● | ●●●●● |
Indicative ratings based on typical fabric/process characteristics, not laboratory results.
Poly-cotton is included to show that most everyday garments are blends rather than pure synthetics. Nylon rarely appears in the core products of a casualwear range such as hoodies, jersey and denim, whereas polyester is common as a blend partner in fleece and jersey.
Dyeing, Printing and Heat Setting
The two fibres need different dyes, which matters for colour matching and for combining them in one garment. Nylon is typically dyed with acid dyes and polyester with disperse dyes at high temperature. A nylon trim on a polyester garment can therefore shade differently, and trims should be tested together rather than matched by eye.
For printing, polyester is the usual base for dye sublimation, because the dye turns into a gas and bonds with the polyester fibre. Sublimation is much less effective on nylon, so full-colour designs on nylon usually rely on other print methods. See our sublimation printing guide for the limits of that method. Both fibres are heat-set during finishing to stabilise shape, and the temperatures differ, so ask the factory what it uses and what the ironing limit on the care label should be.
Nylon vs Polyester by Use Case
The easiest route to a nylon vs polyester choice is to start from the garment. The table lists typical choices and the reasoning behind them. Technical performance sportswear and certified outerwear are outside Ruhrose’s core range, so for those categories the guidance below is for orientation, and you should work with a specialist technical supplier.
Typical fibre choice by application
| Application | Common choice | Why |
|---|---|---|
| Activewear and leggings | Polyester or nylon, often with elastane | Quick drying and stretch; nylon for a smoother, silkier hand |
| Lightweight shells and windcheaters | Nylon or polyester, often ripstop | Strength at low weight; see the ripstop fabric guide |
| Linings | Polyester | Smooth, durable and economical |
| Hosiery and tights | Nylon with elastane | Fine, strong, elastic |
| Bags and packs | Nylon in heavier deniers | Abrasion and tear resistance |
| Fleece and jersey blends | Polyester, blended with cotton | Softness, durability and reduced shrinkage; see French terry fabric |
| Promotional and team wear | Polyester, sublimated | Colour retention and print compatibility |
Typical starting points, not rules. Always confirm with swatches and tests.
For the performance end of the market, our sportswear manufacturer guide explains what to look for in a supplier.
Denier: How Fine Is the Yarn?
Denier measures the linear mass of a yarn: the weight in grams of 9,000 metres. A higher denier means a thicker yarn and usually a heavier, tougher fabric. It applies to both nylon and polyester and is the main number to quote alongside the fabric type, for example a 40 denier nylon ripstop. Denier describes the yarn, not the finished fabric weight, so also specify GSM.
Typical yarn denier bands by use
Typical, varies by product and factory
Indicative typical ranges only. Coatings, weave and finishing change how a given denier performs.
Recycled Nylon, Recycled Polyester and Microfibre Shedding
Recycled versions of both fibres exist. Recycled polyester is often made from post-consumer bottles or from textile waste, and recycled nylon commonly comes from fishing nets, carpet or industrial scrap, though the supply is smaller. Recycled content can reduce the use of virgin fossil material, but claims are only as good as their documentation. Ask for certificates such as the Global Recycled Standard and check what share of the fibre is actually recycled.
Both synthetics can shed tiny fibres during washing, which end up in wastewater. How much depends on the fabric construction, yarn type, finishing and wash method. Brands can reduce risk by choosing tightly constructed, less hairy fabrics and by telling customers to wash less often at lower temperatures, but no fibre choice removes the issue entirely. Our sustainable fabrics guide explains how to treat environmental claims cautiously, since blends and coatings can also complicate recycling at end of life.
Care Differences
Care labels depend on fabric construction and finish, but some general points hold for both fibres, and the nylon vs polyester difference is mainly about heat and sunlight. Both fibres dislike high iron temperatures, and nylon is particularly sensitive to hot irons and long sun exposure. Washing at moderate temperatures, avoiding fabric softener on moisture-wicking finishes and keeping zips closed to protect fabric all extend garment life.
Your wash tests should drive the label wording. Our garment testing guide lists the shrinkage, colour fastness and seam tests to request, and the same logic applies to either fibre.
How to Specify Nylon or Polyester for a Factory
A good specification leaves little room for interpretation, whichever side of the nylon vs polyester choice you land on. State the fibre, the yarn, the construction and the finish, and attach a swatch. If you compare two quotes, make sure they describe the same fabric.
Synthetic fabric specification checklist
- Fibre: nylon (polyamide) or polyester, and nylon type if known
- Recycled content, if any, with the certificate you require
- Yarn denier and filament type, plus the fabric weight in GSM
- Construction: weave or knit, ripstop or plain
- Finishes: DWR, coating, calendering, anti-static, brushed
- Dye type, colour and fastness requirements including rubbing and washing
- Heat limits for pressing and care label wording
- Seam and trim compatibility, including thread and zips
- Tests required, for example abrasion, pilling, tear and colour fastness
- Reference swatch or garment and tolerances
Carry the approved sample details into the bulk order unchanged.
From brief to approved fabric
- 1Define the useGarment, climate, wear and wash expectations.
- 2Pick a candidateChoose nylon, polyester or a blend for that use.
- 3Request swatchesAsk for two options with weight and finish stated.
- 4TestWash, rub and, where relevant, water-test the swatches.
- 5Sample and approveMake the garment, check seams and fit, then lock the spec.
Keep the approved swatch with the sample so bulk can be compared to it.
How Ruhrose Approaches Nylon vs Polyester
Ruhrose develops hoodies, jersey, denim and woven casualwear for UK buyers, with production in Bangladesh. Polyester is common in our world as a blend partner in fleece and jersey, while nylon is rarely part of core products. Technical performance garments, such as waterproof shells or engineered activewear, are outside our core, so if your product needs them we will say so early and suggest you work with a technical specialist. Where a polyester or poly-cotton fabric suits a casualwear product, we sample before bulk so you can see the result.