Resources / Fabric selection
Fabric Selection Guide for Knitted Apparel
Fabric is usually chosen by name and then judged by hand. That order produces expensive surprises. This guide sets out the attributes to decide in sequence, so the fabric choice follows the garment's job.
Five attributes to settle in order
What the garment does, how often, and against what it rubs.
Single knit, rib, interlock, or a fleece-backed structure.
The weight the season and silhouette need, before shrinkage.
Whether the garment relies on stretch, and how it must return.
Surface finish, handfeel target, and how color will be applied.
A fabric that passes a hand test can still fail a wear test. Decide the job before the handfeel.
Who it is for
Who this guide is written for
For buyers translating a product idea into a material direction that a mill and a garment factory can both act on.
Design-led buyer
Stage 1
You have a silhouette and a reference garment. The guide converts handfeel language into attributes that can be sourced and compared.
Buyer replacing a fabric
Stage 2
A quality is unavailable or too costly. Change one attribute at a time and record what changed, otherwise the replacement is judged as a different garment.
Buyer specifying performance
Stage 3
The garment has a functional requirement. State the condition of use first; the test method follows from the condition, not the other way round.
Before you choose a quality
These five answers narrow the field faster than any fabric catalog.
Selection logic
The decisions that actually narrow the choice
Deciding weight before structure, or finish before use, is what turns a short list into a long one.
Order of material decisions
| Decision | Why it comes at this point | What to record |
|---|---|---|
| Use and wear | It sets the performance floor and rules out structures that cannot meet it. | Wear condition, expected life, and the failure that matters most. |
| Knit structure | Structure determines stretch direction, recovery, drape and surface. | Structure name, gauge or needle range if known, and direction of stretch. |
| Weight band | Weight follows from structure and season; it changes opacity, drape and cost. | Weight per area in one stated unit, measured on the finished quality. |
| Stretch and recovery | A garment that relies on stretch needs a recovery requirement, not only an elongation one. | Whether stretch is required, in which direction, and what recovery means for the fit. |
| Finish and color | Finish changes handfeel and can change shrinkage; color route changes lead time and minimums. | Finish description, handfeel target, and the color application route. |
| Garment construction fit | The same fabric behaves differently after cutting, sewing and washing. | Whether a garment wash is planned and how the sample will be judged. |
If a supplier proposes a substitution, ask which attribute it changes. A substitution that preserves structure and weight but changes finish is a different product, even at the same price.
Reference
Knit structures and what they are chosen for
These descriptions are general material guidance. They are not a KnitCertain product list, and no specific quality, weight or performance value is stated here.
General structure reference
| Structure | Typical use | What to verify before choosing |
|---|---|---|
| Single jersey | T-shirts, light tops, linings. | Surface uniformity, twist, and how the edge curls when cut. |
| Rib | Cuffs, collars, neckbands, fitted panels. | Recovery after repeated stretch, and width stability after washing. |
| Interlock | Stable tops and heavier jersey garments. | Handfeel against weight, and whether drape still suits the silhouette. |
| Fleece-backed knit | Sweatshirts, hoodies, joggers. | Surface stability after washing, pill resistance, and bulk at seams. |
| Loop-back knit (French terry) | Sweatshirts and pants where the reverse is a loop, not a brushed pile. | That the reverse is a loop rather than a raised pile, loop consistency, and how the cut edge behaves. |
| Piqué (double piqué in one supplier record) | Polos and structured knits that want a raised, mesh-like face. | That the face is a true piqué, the direction and amount of stretch, and whether the double-face weight suits the garment. |
| Ponte or stable double knit | Structured garments that need a clean surface. | Recovery, seam strength, and whether the garment will bag at stress points. |
Structure alone does not define performance. Fiber, weight, finish and construction all change the outcome, which is why a material decision is recorded as a set rather than a name. A fiber name is not a structure either: cotton can be a single jersey, an interlock or a fleece-backed knit, so a quote that names only the fiber leaves the structure open. Supplier catalogs also separate loop-back, brushed fleece and napped pile under different series names, and an English label on a quote does not prove which of them is being offered. The piqué row is a sample observation from one supplier record, a double-face cloth described with a three-dimensional mesh face at 365g; that is not a standard definition and it does not establish that the structure suits every polo, so confirm the face, the stretch and the weight on the swatch.
Write the job
State use, wear condition, and the failure that matters most.
Choose structure
Narrow to one or two structures that can meet the job.
Fix weight and stretch
Record weight in one unit and state whether recovery is required.
Confirm finish and color
Settle handfeel, surface finish and the color route before sampling.
Common mistakes
Six material decisions that cause rework
Each one is cheap to fix on paper and expensive to fix after cutting.
Choosing by name
Two qualities sold under the same name can differ in structure, weight and finish. Record attributes, not labels.
Deciding weight last
Weight changes drape, opacity and cost at the same time. Choosing it after the pattern is fixed usually forces a pattern change.
Stretch without recovery
A fabric can stretch enough and still not return. Specify recovery if the fit depends on it.
Ignoring the wash
A garment wash can change handfeel, surface and dimensions. Decide whether it is in scope before the fabric is approved.
Decoration on the wrong surface
A finish that feels right can reject a print or distort under embroidery. Test it on the actual quality: a print strike-off shows ink, coverage and edge on that cloth, an embroidery sew-out shows distortion and stitch definition, and neither proof approves the other.
Approving from a photo
Color and surface do not survive a screen. Approve from a physical swatch under a stated light condition.
How KnitCertain uses this information
Material direction as a recorded decision
KnitCertain works on made-to-order apparel made from knitted fabrics. A material direction is reviewed against the garment's use, construction and decoration before sampling.
What can be confirmed at review depends on what is already decided. A named fabric with no structure, weight or finish stated cannot be sourced as a like-for-like replacement.
When a quality is proposed, the useful question is which attributes it preserves and which it changes, because that answer determines whether the sample still tests the original design.
Use it now
Copyable material direction sheet
Complete one row per candidate quality. The point is to compare attributes, not names.
Blank material direction sheet
| Attribute | Candidate A | Candidate B | Evidence held |
|---|---|---|---|
| Structure | swatch / mill sheet | ||
| Weight and unit | |||
| Stretch direction and recovery | |||
| Finish and handfeel | |||
| Color route | |||
| Shrinkage behavior after stated wash | |||
| Decoration compatibility | |||
| Minimum and availability |
No downloadable file is published for this guide. The table above is the current working version.
Weight and basis
Why the same fabric can be quoted at three weights
A weight is comparable only when the nominal or measured value, the state, the unit and the test method are all named. Where they are not named, the useful move is to ask rather than to reconcile.
One sheet may show 345g, another 345-370g and another 375g for what looks like the same quality. The documents do not record whether each figure is nominal or measured, which state it refers to, or which version of the quality it belongs to. Nothing in the files explains why the numbers differ: state, unit and batch are questions to put to the supplier, not a recorded cause. Treat the difference as an open question and confirm it before comparing anything.
Garment weight and fabric weight are different measurements. A shirt described as 200g or 0.2kg is the weight of the finished garment; a fabric quoted at 200g/m² is weight per area. Neither converts into the other without the garment's consumption, and a garment weight says nothing about the structure or the recovery of the cloth it was cut from.
Questions, not conclusions
| What the number looks like | Question to put to the supplier | Why the answer changes the comparison |
|---|---|---|
| A single number (nominal or measured, unconfirmed which) | Is this nominal or measured, at which state, in which unit? | Only a stated state, unit and method make the number comparable; without them the difference cannot be attributed to any cause. |
| A range (unconfirmed basis) | Who set the range, on what basis, and what is assured inside it? | A range describes a working band, not the value your order will sit at. |
| A number with no basis | What state, unit and method does this refer to? | Until that is answered, the figure cannot be compared with any other. |
Record the supplier's answer against the quality code and the date it was given. Keep the answers as nominal, measured or still unconfirmed, and do not average the figures: an average of three unconfirmed numbers is a fourth unconfirmed number.
Fabric selection questions
Questions buyers ask about material choice
These answers cover the boundary between a material preference and a material specification.
Should I choose the fabric or the garment construction first?
How do I describe a handfeel so a mill can match it?
Is a heavier fabric always better quality?
Can I substitute a fabric after the sample is approved?
Does KnitCertain publish fabric specifications?
Start project evaluation
Send the material direction you are working from.
State the garment's job and what you already know about structure, weight and finish. The gaps are easier to close when the use is clear.
- Garment and wear condition
- Structure or reference quality
- Weight and handfeel target
- Decoration technique
- Order quantity and color count
Choose one starting route
State the garment's job and what you already know about structure, weight and finish.