End-Use Guide · Chinos
Chino Fabric: What to Specify and Why
Chino fabric is a bottom-weight built for comfort rather than protection. Ours is 98% cotton / 2% spandex at 150–230 GSM, in three constructions — 30 × 30 + 40D, 30 × 16 + 70D and 21 × 16 + 70D. The spandex is there for stretch; the light weight is there so the garment is comfortable. The + figure is the elastane filament denier.
Updated
What does a chino have to do?
A chino is a trouser somebody wears all day by choice. That is a different brief from workwear, which is a trouser somebody wears because the job requires it — and the difference shows up in every line of the specification. Nothing here is being asked to survive abrasion, snagging or an industrial laundry. It is being asked to move with the wearer and stay comfortable for twelve hours.
Those two demands produce the two decisions that define the cloth. The garment has to give where the body bends — at the seat, the knee and the waist — which is why there is elastane in a fabric that is otherwise all cotton. And it has to stay light, because a bottom-weight that gets heavy stops being comfortable long before it stops being durable. Everything below follows from those two.
Worth naming the boundary before the numbers: this is a comfort specification, not a protective one. If the trouser is going into heavy-duty or industrial use, the brief inverts — strength leads, elastane usually comes off the specification entirely, and the cloth is a different animal. That end use has its own page.
The bottom-weight built the other way round — tough first, comfort second — is workwear fabric: what to specify and why.
What construction do we specify for chinos?
| Specification line | What we specify | Why it is there |
|---|---|---|
| Composition | 98% cotton / 2% spandex | Cotton carries the hand and the breathability of an all-day trouser; the 2% spandex is there for stretchability |
| Constructions | 30 × 30 + 40D 30 × 16 + 70D 21 × 16 + 70D | Three constructions across the weight band. The figures before the + are the cotton yarn counts, warp then weft; the + figure is the elastane filament denier |
| Weight | 150–230 GSM, finished | Light, so the garment is comfortable. A bottom-weight that behaves like one, without the mass a work drill carries |
| Thread density (ends × picks) | Quoted per quality | Density belongs to the individual quality rather than to "chino cloth", and is confirmed per quality against the approved sample |
| Weave | Quoted per quality | Stated per quality. The weave changes how a bottom-weight wears and how the stretch reads, so it belongs on the order rather than being left to whatever the loom is set for |
| Dye and finish route | Quoted per quality | Agreed per programme. An elastane cloth constrains what the route can do to it, so the route is settled before bulk rather than after |
Three cells are held rather than published, and it is worth saying why rather than leaving it to look like an omission. Thread density, weave and route are not properties of "chino fabric" — they are properties of one quality on one processing route, and a number printed here would be wrong for half the fabrics it got copied onto. The finished width is held the same way. The lines that are stated above are the ones that hold across the end use, which is exactly what makes them worth publishing.
One more line lives per quality rather than on this page: which direction the elastane runs. A stretch woven can carry its elastane in the weft, in the warp, or in both, and it changes which way the finished trouser gives. We confirm it per quality — and if your pattern depends on it, say so in the brief rather than assuming.
How the count-and-density half of that notation is read is covered in how to read fabric construction. The elastane half is explained in the next section, because it uses a different numbering system entirely.
What does the + 70D in a chino construction mean?
It is the elastane. The number is its denier — the thickness of the individual spandex filament — and it is not part of the cotton construction at all. Read "30 × 16 + 70D" as: 30s cotton in the warp, 16s cotton in the weft, plus a 70-denier elastane filament. Three facts, not three counts.
The trap in that line is that its two halves use numbering systems that run in opposite directions, and nothing in the notation warns you:
- Cotton counts are indirect — higher means finer. The count says how many fixed lengths of yarn make up a fixed weight, so the more of them it takes, the thinner each one is. 30s is a finer yarn than 21s; 16s is coarser than both.
- Denier is direct — higher means thicker. Denier is the weight in grams of 9,000 metres of the filament, so the bigger the number, the more filament there is. 70D is a thicker elastane than 40D, which is the reverse of what the cotton half of the same line has just taught you.
- The percentage and the denier answer different questions. "2% spandex" is how much elastane there is by weight in the finished cloth. "70D" is how thick each filament is. A cloth can hold the same 2% with a different denier, and it will not behave the same.
This matters commercially more than it looks. A buyer comparing two quotations, one at + 40D and one at + 70D, is not comparing a detail — those are different filaments doing the stretch, in cloths that will not feel the same in the hand or behave the same on a body. If a quotation gives you a composition but no denier, the elastane specification is incomplete, and the gap will be filled by whoever weaves it.
How do the three chino constructions compare?
They form a progression rather than a menu, and they coarsen one thing at a time. Where each one lands inside the 150–230 GSM band depends on its thread density and finishing route, which are confirmed per quality — coarser yarn alone does not fix a weight.
| Construction | What changes |
|---|---|
| 30 × 30 + 40D | The finest of the three, and balanced — 30s in both directions, with the finest elastane |
| 30 × 16 + 70D | The weft coarsens to 16s while the warp stays at 30s; the elastane thickens to 70D |
| 21 × 16 + 70D | Both directions coarse — 21s warp, 16s weft |
Read it with the count rule in hand and the logic is plain. The warp count falls from 30s to 30s to 21s and the weft from 30s to 16s to 16s — and because cotton counts run backwards, a falling number means a thickening yarn. The middle construction changes one direction; the last changes both. The elastane thickens once, at the same step the weft does, and then stays put.
Which is why the useful question is not "which is best". It is where in the band does your garment sit. A light summer chino and a structured autumn one are the same brief at two weights, and the progression above is how the cloth gets from one to the other — by count and density, not by adding a different fibre. The exact weight any of the three lands at depends on its density and finishing route, which is why those are confirmed per quality.
Why is there 2% spandex in a chino?
Because the spandex is there for stretchability — that is its whole job. Cotton on its own has very little give: it will stretch a small amount and then stay stretched, which is how a rigid cotton trouser ends up bagged at the knee and the seat by the end of a day. The elastane is what lets the cloth move with the body instead of being deformed by it.
The figure is small on purpose. 2% is a comfort figure, not a performance one. It is not there to make an activewear garment or to hit a stated elongation target — it is there so the trouser gives where the wearer bends. If your garment genuinely needs a measured stretch and recovery specification, that is a different conversation and it needs to be in the brief, because it changes the construction rather than being a note on top of it.
Two consequences worth knowing before you order. First, the elastane and the light weight are working on the same problem from different directions — the stretch gives comfort in movement, the low GSM gives comfort in sheer wear — which is why the specification holds both and why pushing the weight up to "make it feel better quality" works against the brief. Second, an elastane cloth is not neutral downstream: it constrains what dyeing and finishing can do to it, which is why the route is agreed per programme rather than assumed.
What each downstream route commits you to in metres is set out on low-MOQ fabric sourcing from Pakistan, and the processing state the route needs the cloth in is on greige vs RFD vs PFD.
What goes wrong if you specify chino fabric badly?
- You write the composition and leave the denier off. "98/2 cotton-spandex" does not say whether the elastane is a 40D or a 70D filament, and two cloths at the same percentage with different deniers are not the same cloth.
- You read the + figure as another yarn count. It is not one, and it does not even run the same way: higher denier means thicker filament, while higher cotton count means finer yarn. The one construction line carries both systems.
- You order by GSM alone. Weight is the outcome of counts and density. Two of these constructions can be brought to a similar figure and still feel different in the hand, because the weight is arranged differently.
- You assume which way the stretch runs. Weft, warp or both is a property of the individual quality. If the pattern depends on it, it belongs in the brief — not in the assumptions.
- You push the weight up to make it feel more substantial. The light weight is a deliberate comfort decision, not an oversight. Adding grams to a comfort trouser subtracts the thing it was specified for.
- You leave the route until the cloth exists. Elastane constrains what dyeing and finishing can do, so a route settled afterwards is a route settled by whoever is running that week.
The field-by-field version of that list — the lines an order has to state before anyone can quote it properly — is in what a greige fabric specification must state.
Related knowledge
- Choosing fabric by end use
The pillar this page sits under — the five-step chain from what a garment must survive to what gets written on the order.
- Workwear fabric: what to specify and why
The other bottom-weight, specified the opposite way round — tear strength first, and no elastane in the blend at all.
- Shirting fabric: what to specify and why
The same argument on a top-weight — and the clearest proof in this cluster that construction, not fibre, decides how a cloth handles.
- How to read fabric construction
The count-and-density half of a chino construction line, before the elastane denier is added to it.
- Greige vs RFD vs PFD
Which processing state a stretch bottom-weight has to reach the dyehouse in before any route can start.
- Low-MOQ fabric sourcing from Pakistan
What a dyed or printed chino programme commits you to in metres per colour — the constraint that shapes the range.
Frequently asked questions
What fabric are chinos made from?
The specification we work to is 98% cotton with 2% spandex, at 150–230 GSM finished, in one of three constructions: 30 × 30 + 40D, 30 × 16 + 70D or 21 × 16 + 70D. The cotton carries the hand and the breathability; the spandex is there for stretch, and the weight is kept light for comfort.
What does 30 × 16 + 70D mean?
30s cotton yarn in the warp, 16s cotton yarn in the weft, plus a 70-denier elastane filament. The figures before the plus sign are cotton counts; the figure after it is the thickness of the spandex filament, not a third count and not a thread density.
Is 70D elastane thicker than 40D?
Yes. Denier is a direct system — the weight in grams of 9,000 metres of filament — so a higher number means a thicker filament. That is the opposite of cotton counts, where a higher number means a finer yarn. One construction line can carry both systems at once.
What GSM is chino fabric?
We work to 150–230 GSM, and that is finished weight — the cloth as it arrives, after dyeing and finishing, not a loom-state figure. The band is deliberately light: the garment is specified for all-day comfort, so weight is kept down rather than added for the feel of substance. Where a given quality lands inside the band follows from its counts, its thread density and its finishing route.
Why do chinos have 2% spandex?
For stretchability. Cotton on its own gives very little and tends to stay stretched, which is how rigid trousers bag at the knee and seat. The 2% is a comfort figure rather than a performance one — it lets the cloth move with the body, not hit a measured elongation target.
Which of the three chino constructions should I choose?
They are a progression, not a ranking. 30 × 30 + 40D is the finest and balanced; 30 × 16 + 70D coarsens the weft only and thickens the elastane; 21 × 16 + 70D coarsens both directions. Where each lands inside the 150–230 GSM band depends on its thread density and finishing route, which are confirmed per quality. Tell us where the garment sits and we will send all three as cuttings.
On typical values: the composition, the three constructions and the weight band above are the specification we work to for chinos; thread density, weave, finished width and the dye and finish route are properties of a specific quality and programme and are confirmed per quality before bulk. Physical swatches and approved specifications override anything stated here. Burhan Enterprises is a sourcing and export partner and coordinates through partner mills and processing units; we do not own manufacturing facilities.
Developing a chino programme?
Tell us where the garment sits in the weight band and how much give the pattern needs. We will send all three constructions as physical cuttings free of charge, and confirm density, weave and route per quality.