Fabric is the largest single line in an apparel cost sheet and the longest single dependency in the calendar, and it is routinely specified with less detail than a button. A fabric order that says “cotton jersey” without a composition, a weight and a structure is not a specification; it is a conversation, and the mill will resolve it in whichever direction suits its own running schedule.
Apparel Fabric Sourcing China: what determines the fabric you can actually get
Four properties decide what a mill will run for you, and each one has to be stated numerically. The composition and its tolerance, because a blend that is described as majority cotton can vary enough to change how the fabric dyes and how it shrinks. The weight, stated in grams per square metre with an acceptable range. The structure, because a single jersey, a rib and an interlock are different fabrics with different behaviour even at the same weight. And the colour, which has to be tied to a reference rather than a name.
Two further properties are frequently omitted and decide whether the fabric behaves. The finish, which includes any treatment applied for softness, stability or surface effect, and the width, which determines the marker and therefore the consumption per garment. A fabric quoted at a lower price per kilogram with a narrower width can be the more expensive choice once the marker is calculated.
The commercial consequence is that fabric selection is a specification exercise rather than a shopping exercise. Where those six properties are written down, a mill can quote against them and the resulting fabric can be compared with the specification on arrival.
Knitted fabric basics: composition, weight and structure
For knitwear, three structures account for most programmes. A single jersey is the lightest and most common, with a smooth face and a tendency to curl at the edges. A rib is knit with alternating wales and stretches more in the width, which is why it is used for cuffs, neckbands and body panels on garments that need recovery. An interlock is a double-faced knit with more weight and stability and less curl, and it is often chosen where a fabric has to hold a shape without a lining.
Fleece is a family rather than a structure, built by knitting a ground and a looped face and then finishing it differently to produce brushed, anti-pill or unbrushed surfaces. The weight and the finishing route decide how the fabric drapes and how it behaves after washing, which is why a hoodie programme specified on weight alone will still produce two visibly different garments from two mills.
Two references make the discussion concrete. The neutral vocabulary for the physical tests applied to these fabrics is published in the ASTM standards programme for textiles, and the scope a laboratory applies to knitted apparel is published, as Intertek’s textiles and apparel testing range illustrates.
| Structure | How it behaves | Where it is used |
|---|---|---|
| Single jersey | Light, smooth face, curls at the cut edges | T-shirts and light knit tops |
| Rib | Stretches most in the width and recovers well | Cuffs, neckbands and body panels |
| Interlock | Two-faced, more weight and stability, little curl | Shapes that have to hold without a lining |
| Fleece | Knitted ground with a looped face, finished for surface | Hoodies, sweatshirts and heavier tops |
Structure is the property buyers most often omit and the one that decides how a fabric behaves in the marker, in the seam and in the wash. Two fabrics at the same composition and weight can behave differently in all three, which is why a fabric specification that names only the fibre and the weight is not yet a specification a mill can run to.
Mill minimums, dye lots and the minimum colour quantity
A mill minimum is usually expressed per colour rather than per order, because the binding constraint is the dyeing batch rather than the knitting. That produces two thresholds: the minimum quantity for a colour that already exists as greige and needs only dyeing, and the higher minimum for a colour that has to be developed.
Dye lots are the second constraint and the one that affects a programme across seasons. Each dyeing batch has a shade band, and a reorder placed later will come from a different batch. Where two lots are used in one production run, the shade difference between them has to be managed by cutting and bundling them consistently rather than mixed across a size or a panel.
Two habits reduce the risk. Confirm the minimum per colour before the range is finalised rather than after, because a palette of six colours at a low volume per colour can fail a mill minimum while the same total volume in three colours passes it. And where a colour is expected to repeat across seasons, ask whether the mill can hold a standard and re-match to it, which is the mechanism that makes a seasonal reorder possible.
What sits inside a quoted fabric lead time
A fabric lead time is a sequence, and the quoted figure usually covers only part of it. Knitting or weaving the greige, dyeing, finishing, and then inspection and packing. Where the fabric is developed rather than selected from a stock range, lab dips precede all of it, because the colour has to be matched and approved before a batch is dyed.
The approval step is the part the buyer controls and the part most often left off the calendar. A lab dip submitted for approval and returned three days later has moved the dyeing date by three days. Where a programme carries several colours, the approvals can be run in parallel, and doing so is usually the single largest saving available in a fabric schedule.
Two questions make a quoted lead time comparable. Does the figure include the lab dip and the approval, or does it start once the colour is approved. And does it include inland transport to the factory, since fabric that is dyed and finished at a mill is still not at the cutting table. Where the goods move internationally, the documentary requirements for the consignment follow the framework set out in the WTO Trade Facilitation Agreement.
Incoming fabric inspection: what to check on a roll
Fabric is inspected on arrival because the checks that follow it are unrecoverable. Four items carry most of the risk: shade against the approved standard, weight against the stated tolerance, width against the specification, and visible faults such as holes, slubs and weaving irregularities against the inspection standard agreed with the mill.
Two habits make the check meaningful. Inspect by roll rather than by sample, recorded with the roll number, because a shade band difference between rolls is exactly the defect that a spot check will miss. And record the values rather than a verdict, so that a dispute can be settled from the record rather than from the cloth, which by then has been cut.
Where the fabric is delivered against a claim, the certificate has to cover the material being used rather than a comparable one. OEKO-TEX Standard 100 names the articles in scope, and where a fibre is described as organic or recycled, the standards behind the claim are published by Textile Exchange. The choices available at the yarn stage, and the certification questions they raise, are set out in this guide to eco-friendly knitwear in bulk.
Shrinkage, fastness and weight: the tests to agree before the order
Three tests should be agreed with the fabric order rather than after it. Shrinkage determines what a garment will measure after the care cycle it is sold with, and the result is stated as a percentage with a direction. Colour fastness covers the conditions the product will meet: washing, rubbing, perspiration and light. Fabric weight confirms that the cloth delivered is the cloth specified, and it is usually the first property to reveal a substitution.
Two conditions make the results usable. Test the production fabric rather than a comparable roll, because a mill’s output varies between lots, and record the test conditions, because shrinkage depends on temperature and cycle. A result quoted without its conditions cannot be compared with the specification it is meant to satisfy.
The test standard to agree is worth naming explicitly on the order, since a result is only meaningful against a stated method. That is what makes a laboratory report comparable between suppliers and between seasons, rather than a fresh discussion each time.
Documentation: what a fabric order should carry
A fabric order should travel with a short document set: the mill’s specification confirming composition, weight, width and finish; the lot or batch numbers for each roll; the test reports for shrinkage, fastness and weight where those were agreed; the certificate that supports any material claim; and the packing list with the quantities and roll count.
The value of the set is that it makes the fabric traceable to the garment. Where a claim appears on a finished product label, the traceable route runs from the label back to a tested material, and a file that stops at a mill name is a claim without a chain. Where a fabric order is being placed as part of a first garment programme, the terms that govern it belong alongside the garment terms, and the structure of a first order is described in this explanation of factory minimum order quantity.
One commercial detail is worth fixing in writing at the same time: where the delivery term places risk. The ICC Incoterms rules define what each term includes, which is what allows a fabric price quoted at the mill to be compared with one quoted delivered to the cutting table.
Where can I find Chinese clothing suppliers?
Through trade exhibitions, sourcing agents, platforms and referrals.
Chinese suppliers are found through industry exhibitions, sourcing agents, B2B platforms and referrals from other brands, and the route you use decides how much of the specification you control.
The routes differ in what they verify. An exhibition puts you in front of a factory’s own staff and its samples, which is the fastest way to judge technical fluency but not capacity or compliance. A sourcing agent filters suppliers for a fee and is useful where the category is unfamiliar or the volume is small. A platform provides reach and comparison with almost no verification of the factory behind the listing, which shifts the whole assessment onto the buyer. Referrals from brands in a similar category are the slowest route and usually the most informative.
Whichever route is used, the filter that matters is the same: does the supplier answer with facts about equipment, sites and process, and does it ask about your specification. The questions that separate a factory from a sales desk, and the answers that indicate which one you are talking to, are set out in this guide to the questions to ask a clothing manufacturer.
Where to source fabric for clothing brands?
From a mill, a converter, a stock service or your garment factory.
Brands source fabric directly from mills for volume, from stock services for speed, and through the garment factory when the fabric is part of the garment quotation.
Sourcing direct from a mill gives the truest picture of the fabric specification, the minimum and the lead time, and it requires volume per colour. A stock service holds greige or finished fabric and can ship in small quantities off the shelf, which is the fastest route and the one with the least control over the exact shade and lot. Routing the fabric through the garment factory consolidates the order and the shipping at the cost of visibility, because the specification is then held by the party purchasing rather than the party selling.
The decision usually turns on how much of the fabric specification is commercially significant. Where the fabric is the product, as it is in knitwear sold on hand feel and recovery, the specification is best owned by the buyer. Where the fabric is a commodity and the garment is the product, consolidating is defensible. The trade-offs are described from the other side in this overview of apparel design and development.
Conclusion
Fabric sourcing comes down to a specification, a minimum and a calendar. State the composition, weight, structure, colour, finish and width so that a mill can quote against them; establish the minimum per colour before the palette is fixed; put the lab dip and the approval on the critical path rather than beside it; and inspect on arrival by roll rather than by sample. The fabric line is the largest in the cost sheet and the longest in the schedule, which is why the specification that governs it should be the most specific document in the programme.
FAQ
What has to be specified on a fabric order?
Composition with its tolerance, weight in grams per square metre, structure, colour against a reference, finish and width. Those six properties are what allow a mill to quote comparably and what allow the delivered fabric to be checked against the order.
Why is the minimum usually per colour?
Because the binding constraint is the dyeing batch rather than the knitting. A colour already available as greige needs only dyeing, while a new colour has to be developed, so the thresholds differ and the palette should be planned against them.
What sits inside a quoted fabric lead time?
Knitting or weaving the greige, dyeing, finishing, and then inspection and packing, with lab dip approval preceding dyeing where the colour is developed. Ask whether the quoted figure includes the approval step and inland transport to the factory.
What should be checked on incoming fabric?
Shade against the approved standard, weight and width against the specification, and visible faults, recorded by roll volume rather than by sample. A shade band difference between rolls is the defect a spot check misses.
Next step. If you are selecting fabric for a knitwear programme, send the composition, weight and end use you have in mind. The team can confirm what the specification still needs, what the minimum per colour would be, and where the approval steps sit in the calendar.
