What is moisture wicking fabric? It is fabric that moves liquid sweat away from the skin by capillary action, drawing it through and along the yarns so it can spread out and evaporate from the outer face instead of sitting against the body. "Moisture-wicking" describes that transport of liquid water. It does not, on its own, say how fast the shirt dries, how much water vapour passes through it, or whether the effect survives fifty washes.
This guide is for product developers at fishing apparel brands and for founders writing their first fishing shirt specification. On a hang tag, "moisture-wicking" is a word. On a specification it has to become something a laboratory can measure and a factory can be held to. The sections below explain the mechanism, name the test methods and what each measures, separate wicking from quick-dry and breathable, cover durability after washing, and show how to write the requirement and verify it.
It describes test methods by what they measure, not by pass marks. Acceptance values belong in the agreement between you, your supplier and your laboratory.
What Is Moisture Wicking Fabric? Capillaries, Fibres and Finishes
Three things decide whether a fabric wicks: the spaces between fibres, the shape of the fibres themselves, and the chemistry of their surface.
Capillary action. Liquid is pulled into narrow gaps by surface tension, the same effect that draws water up a thin glass tube. In a knitted or woven shirt fabric, the capillaries are the small channels between fibres inside a yarn and between yarns in the structure. North Carolina State University's textile testing centre describes its absorbency test in exactly these terms: water is drawn into the fabric through capillary action from a plate that simulates sweating skin. Finer fibres and tighter yarns make narrower, more numerous channels; an open, loose construction makes fewer.
Fibre cross-section. A round fibre offers only the gaps between its neighbours. Fibres spun with grooved or lobed cross-sections add channels along their own length. A fibre-shape patent originally filed by Eastman Kodak notes that wicking in conventional fibres happens entirely in the capillaries between fibres, and that slots in the fibre surface generally enhance fluid transport, while also warning that some channel shapes hold liquid rather than release it. Shape helps, but it is engineered, not automatic.
Surface chemistry. Water only travels along a capillary if it can wet the walls. Polyester and nylon polymers are hydrophobic: a US patent on hydrophilic finishes attributes their poor native wicking to "the natural hydrophobicity of nylon and polyester polymers" and notes that water does not readily spread over their surfaces. A hydrophilic finish applied in dyeing or finishing makes those surfaces wettable. Chemical suppliers sell such finishes separately for polyester and for polyamide; Archroma's HYDROPERM range, for example, lists one product for polyester articles and another for polyamide articles.
The AATCC states the same point in the purpose of its moisture management test: results depend on the fabric's water resistance, repellency and absorption, which in turn depend on the geometric and internal structure of the fabric and the wicking characteristics of its fibres and yarns. Composition on its own does not tell you whether a fabric wicks.
Is Polyester Moisture Wicking? Is Nylon? Is Cotton?
These three questions come up on every first spec. Short answers:
| Fibre | Is it moisture wicking? | What to ask the supplier |
|---|---|---|
| Polyester | Not by itself. The polymer is hydrophobic and absorbs very little water. Polyester wicks well when yarn and fabric structure create fine capillaries and the surface is made wettable, by fibre engineering, a hydrophilic finish, or both. | Is the wicking from fibre and construction, from a finish, or from both? |
| Nylon | Not by itself, for the same reason. Nylon can be made to wick with the right construction and a finish formulated for polyamide; a finish chosen for polyester is not automatically suitable. | Which finish is used, and is it designed for polyamide? |
| Cotton | It absorbs, but it does not wick in the performance sense. Cotton is hydrophilic: it takes sweat into the fibre and holds it, releasing it slowly. | If cotton or a cotton blend is proposed, what yarn engineering or treatment is used? |
On cotton, a patent from the apparel maker Delta Galil puts the problem plainly: hydrophilic fibres such as cotton absorb liquids secreted through the skin and release them "only too slowly into the atmosphere". That is why ordinary cotton tees feel heavy and cold once soaked. Engineered cotton is a different matter: CottonWorks describes its TransDRY technology as treating some cotton yarns to repel water and combining them with absorbent yarns to create channels for moisture movement. That is a specific commercial technology, not a property of cotton in general.
So the honest answer to "is polyester moisture wicking" is "a well-made polyester shirt fabric can be". Is nylon moisture wicking? The same answer, with a finish matched to the fibre. Is cotton moisture wicking? Ordinary cotton absorbs rather than wicks; engineered cotton can wick. The fibre name is a starting point, not a specification. Our guide to choosing fabric for custom fishing shirts covers how composition, construction, weight and decoration fit together in the brief; this article stays with the wicking claim.
The Test Methods for Moisture Wicking and What Each Measures
Several standard methods relate to how a fabric handles liquid water. They measure different things, and a result from one cannot stand in for another. The AATCC publishes most of them; the summaries below come from the public scope of each method.
| Method | What it measures | Useful for |
|---|---|---|
| AATCC TM79 | Water absorbency of yarns, fabrics and garments | Checking that the surface takes up water at all; a quick screen for finishes |
| AATCC TM195 | Measurement, evaluation and classification of liquid moisture management, including transport through the fabric and spreading on each face | The closest single method to "moves sweat from the inner face to the outer face" |
| AATCC TM197 | Vertical wicking rate: how quickly liquid travels up a vertically hung strip to specified distances | Comparing how far and fast liquid moves along the fabric |
| AATCC TM213 | Vertical wicking rate measured at specified times rather than distances | The same property reported differently; not interchangeable with TM197 |
| AATCC TM201 | Drying rate of fabric wetted with a set volume of water on a plate held at 37 °C, skin temperature at the onset of sweating | Quick-dry claims |
| ASTM F1868 | Thermal and evaporative resistance of clothing materials on a sweating hot plate | Breathability, meaning water vapour passing through the fabric |
| AATCC LP1 | Standard and alternate home laundering conditions in an automatic washing machine | Preparing specimens before re-testing; not a measurement in itself |
A few points follow from the table.
TM195 is the moisture management test most performance specs reference. It uses an instrument, often called a moisture management tester, in which a test solution is dropped onto the skin-side face and sensors above and below the fabric track how the liquid spreads and passes through by measuring changes in electrical resistance. NC State's testing centre describes the instrument this way and notes that it grades fabrics under TM195. The method classifies the fabric; it does not by itself give a pass or fail.
TM197 and TM213 measure the same behaviour two ways. A specification should name one of them. A supplier's report "to TM197" and another "to TM213" cannot be compared line by line.
TM79 is not a wicking test. It shows whether a fabric absorbs a drop of water. A fabric can pass an absorbency check and still move liquid poorly through its thickness.
Editions matter. AATCC revises methods; at the time of writing (checked 2026-10-20) the public pages list TM195-2011e2(2017)e5, TM197-2022, TM213-2022, TM79-2025, TM201-2012(2014)e3 and LP1-2021. Put the edition in the spec so a later revision does not change what you agreed.
None of these methods supply a universal pass mark for a fishing shirt. You set the acceptance level with your laboratory, based on the product brief and on results from fabrics you already like.
Wicking vs Quick-Dry vs Breathable
Product copy often stacks the three words together. On a specification they are three separate properties with three separate tests.
| Property | What it means physically | Typical test reference | What it does not tell you |
|---|---|---|---|
| Moisture-wicking | Liquid sweat is moved away from the skin and spread through the fabric | AATCC TM195, TM197 or TM213 | How fast the shirt dries, or how much vapour passes |
| Quick-dry | Water held in the fabric evaporates quickly | AATCC TM201 | Whether sweat is moved off the skin first |
| Breathable | Water vapour and heat pass through the fabric before sweat condenses | ASTM F1868 | How the fabric handles liquid sweat |
The three interact. Wicking spreads liquid over a larger area of the outer face, which tends to help drying, and an open, light construction tends to help both drying and breathability. But they can also pull against each other: a dense, high-UPF knit may wick well yet breathe less, and a heavy fabric can wick strongly while holding more water in total and drying more slowly. That is why a spec that says "moisture-wicking, quick-dry, breathable" needs a test reference against each word, or the supplier is free to choose which one to demonstrate.
For a fishing shirt the order of priority usually follows the use. A sun shirt worn all day in humid heat leans on wicking and drying; a tournament jersey worn under a life jacket benefits from fast drying and low cling; a shirt that doubles as a mid-layer on a cool morning needs to move sweat without feeling cold when wet.
Does Moisture Wicking Wash Out? Durability After Laundering
Whether wicking survives washing depends on where it comes from.
Structural wicking comes from fibre shape, yarn and fabric construction. It is part of the material and does not wash out, although abrasion, pilling and fabric softener residues can reduce it over time.
Finish-based wicking comes from a hydrophilic chemical on the fibre surface. How long it lasts depends on how firmly it is bound. The hydrophilic-finish patent cited above links durability to the number of chemical bonds between the finish and the fibre, and notes that even strong bonds of the kinds it uses can still be hydrolysed during laundering. Supplier literature describes some finishes as highly durable or wash-resistant, but those are commercial descriptions, not results for your fabric.
Two consequences for a brand:
- A new-condition test proves very little about a finish-based claim. Ask for results both before and after a defined number of home launderings.
- Care instructions matter. Laundry products such as fabric softener leave deposits on fibre surfaces; if your care label allows them, include them in the laundering step before re-testing.
The re-test is simple to specify. AATCC LP1 sets out standard home laundering conditions in an automatic washing machine and is designed to be combined with a measurement method. A durability clause therefore reads as "launder to LP1 for the agreed number of cycles, then test to TM195". The number of cycles is a commercial decision, not something this article can set for you.
How to Write Moisture Wicking Into a Spec
A useful clause names five things: the method, the edition, the specimen, the condition and the acceptance level. In words, a workable structure is:
The production fabric in each production colour shall meet the agreed moisture management classification when tested to AATCC TM195 (stated edition), on the inner (skin-side) face, in new condition and again after the agreed number of home launderings to AATCC LP1.
Then add one line each for the other properties you intend to claim: drying rate to TM201, vertical wicking to TM197 or TM213 if you want it, and evaporative resistance to ASTM F1868 if "breathable" will appear on the tag. Leave the numbers blank in your template until you have results from a reference fabric; the structure is what keeps the claim honest.
Where this sits in the wider document: the performance section of a tech pack, next to UPF and colour fastness. Our fishing shirt tech pack guide shows where performance requirements go and what else a factory needs before it can quote. For the UPF side of the same section, see UPF ratings for fishing apparel brands.
How to Verify the Claim Before and During Production
Writing the clause is half of the job. The other half is making sure the evidence you receive belongs to the fabric you are buying.
| Check | What to look for on the report or sample | Why it matters |
|---|---|---|
| Method and edition | The method you named, with its edition | A different method or edition produces a result you cannot compare |
| Fabric identity | Fabric article, composition, weight and colour that match your approved swatch | Dyeing and finishing differ by colour and lot |
| Face tested | Which side the liquid was applied to | Transport from the skin side is what the wearer feels |
| Condition | New, and after the agreed laundering | Finish-based wicking can look strong only in new condition |
| Laboratory and date | Laboratory name, report number and date | Confirms the report is current and traceable to your fabric |
Three practical habits help:
- Keep a reference sample. Store the approved fabric and its report together so bulk can be compared against it.
- Re-test when anything changes. A new finish recipe, mill, colour or fabric weight is a reason to test again rather than reuse an old report.
- Add a wear trial. A day on the water in the sample tells you about cling, comfort and how the shirt feels damp. It complements laboratory results; it does not replace them.
Styles such as our short-sleeve performance fishing shirt and long-sleeve UPF 50+ fishing shirt are where these requests usually start; for performance details, see current product specifications and ask for the evidence that supports them for the fabric and colour you select. The full range is in fishing shirts and jerseys.
Frequently Asked Questions
What does moisture wicking mean on a label?
It means the maker claims the fabric moves liquid sweat away from the skin. A label does not say how that was measured. Ask which method and condition support the claim.
Is "moisture-wicking" the same as "moisture management"?
They are used loosely as synonyms. In testing, "liquid moisture management" usually refers to AATCC TM195, which looks at absorption, transport through the fabric and spreading on both faces, while "wicking rate" usually refers to vertical tests such as TM197 or TM213.
Can I compare two suppliers' wicking results?
Only when both used the same method, edition, specimen face and condition. Otherwise ask both to test the candidate fabrics at the same laboratory.
Does a mesh panel make a shirt moisture wicking?
Mesh mainly helps ventilation and drying. It does not change how the main body fabric handles sweat. Test the body fabric for wicking and treat mesh as a separate design choice.
Specify Moisture Wicking With CYCLODRY
Send us the styles you are developing, the markets you sell in and the performance words you want on the hang tag. We will tell you which test evidence exists for the fabrics you shortlist, which tests can be arranged on your production fabric and colour, and how to write the requirement into your tech pack.
Contact CYCLODRY about moisture-wicking fabric for your fishing shirt line to go through the fabric, finish and test plan together.
References
- AATCC — TM195 Liquid Moisture Management Properties of Textile Fabrics, public summary
- AATCC — TM197 Vertical Wicking Rate of Textiles: to Specified Distances, public summary
- AATCC — TM213 Vertical Wicking Rate of Textiles: Specified Times, public summary
- AATCC — TM79 Absorbency of Textiles, public summary
- AATCC — TM201 Drying Rate of Fabrics: Heated Plate Method, public summary
- AATCC — LP1 Home Laundering: Machine Washing
- ASTM — F1868 Thermal and Evaporative Resistance of Clothing Materials Using a Sweating Hot Plate
- NC State University Wilson College of Textiles — Liquid Moisture Management testing
- US Patent 7,427,300 — Hydrophilic finish for fibrous substrates
- US Patent 9,963,821 — Moisture-management in hydrophilic fibers
- US Patent 5,268,229 — Spinneret orifices and filament cross-sections with stabilizing legs therefrom
- Archroma — HYDROPERM moisture management finishes
- CottonWorks — TransDRY technology
The linked AATCC and ASTM pages are public summaries of test methods; the patents and supplier pages describe general mechanisms and third-party technologies. They do not establish test results, performance levels or certifications for CYCLODRY products or fabrics.