Specifications & Testing
Wool Fabric GSM: How to Specify Weight
What GSM should a buyer request for wool fabric?
01 · Define the buyer decision
What must be decided before you compare suppliers
The phrase wool fabric GSM can describe several constructions, finish levels or commercial assumptions. Use the following three gates to keep samples and quotations tied to the same end use.
Garment silhouette
Write the intended result in the brief and ask how the proposed construction, blend or process will reproduce it in bulk.
Construction and loft
Write the intended result in the brief and ask how the proposed construction, blend or process will reproduce it in bulk.
Season and lining
Write the intended result in the brief and ask how the proposed construction, blend or process will reproduce it in bulk.
02 · Make the request comparable
RFQ and specification checklist
Put each point in the written enquiry. Ask whether a quoted figure is a nominal target, a guaranteed range or a result from the actual production-representative sample.
Target finished GSM
State the method, unit, tolerance or physical reference where relevant. Record who approves it and at which sample or bulk stage.
Test method and conditioning
State the method, unit, tolerance or physical reference where relevant. Record who approves it and at which sample or bulk stage.
Allowed tolerance
State the method, unit, tolerance or physical reference where relevant. Record who approves it and at which sample or bulk stage.
Full-width sample weight
State the method, unit, tolerance or physical reference where relevant. Record who approves it and at which sample or bulk stage.
Include the garment, selling market, care route, order quantity by colour, delivery location and target schedule. A technically precise fabric can still be wrong for the commercial program.
03 · Control the approval path
A four-stage working method
- 01
Name the test and conditioning method
Keep the reference, result and approval owner in the order file so the next stage uses the same definition of acceptable.
- 02
Set target and tolerance by end use
Keep the reference, result and approval owner in the order file so the next stage uses the same definition of acceptable.
- 03
Approve a representative development sample
Keep the reference, result and approval owner in the order file so the next stage uses the same definition of acceptable.
- 04
Verify production-finished bulk
Keep the reference, result and approval owner in the order file so the next stage uses the same definition of acceptable.
04 · Prevent predictable failure
Common risks and practical corrections
Quoted GSM is a nominal greige value
Require finished-fabric data.
One cut is not representative
Test across width and rolls.
Higher GSM is assumed warmer
Compare structure and air retention.
05 · Manufacturer context
When Fred Textile is a relevant next step
Fred Textile publishes OEM and ODM cooperation, testing, delivery and payment references. MOQ and commercial terms remain subject to the fabric program, order and contract.
This educational guide does not convert a public company statement into an order guarantee. Confirm composition, finish, test results, certificate scope, MOQ, price, lead time and delivery terms for the specific program.
Frequently asked questions
Quick answers buyers can reuse
01What GSM should a buyer request for wool fabric?+
There is no universal correct GSM. Set a target range from the garment, construction, climate and finish, then confirm conditioned test results and tolerance. Compare fabrics with similar structures rather than treating weight alone as warmth.
02What should an RFQ include for wool fabric GSM?+
Include Target finished GSM, Test method and conditioning, Allowed tolerance, Full-width sample weight. State the test methods, tolerance, quantity by colour and intended garment so quotations are comparable.
03What should buyers check before bulk approval?+
Quoted GSM is a nominal greige value: Require finished-fabric data. One cut is not representative: Test across width and rolls. Higher GSM is assumed warmer: Compare structure and air retention.