A hoodie can look correct in a mockup and still feel wrong in hand because fabric weight affects drape, warmth, opacity and sewing behavior. Buyers can reduce that risk by defining what must be quoted, sampled and approved before bulk work begins.
This guide is designed for apparel brands, sourcing teams and product developers who need to select a practical GSM range without treating one number as a complete quality specification. It focuses on the questions and evidence that help move a custom garment from brief to an approved production standard.
Start with the buying decision
Before requesting a price, describe the customer, use case, target quality level and intended sales channel. These points give context to the specification. A supplier may be able to offer several technically workable routes, but the right route depends on the product result you are trying to protect.
Separate requirements into three groups: fixed requirements, preferred options and open questions. This gives the manufacturer room to propose workable alternatives without quietly changing details that matter to the brand. It also makes quotation differences easier to explain during review.
Use the matrix below during an RFQ or sample review. It turns a broad request into four approval areas and identifies the evidence that should close each decision.
When options are compared, keep the garment, quantity and approval standard constant. Otherwise a lower quotation may reflect a different material, construction route or service scope rather than a more efficient offer. Record every accepted alternative in the current specification.
| Decision area | What to ask | What to approve |
|---|---|---|
| Target GSM | Request the nominal GSM plus an acceptable tolerance and construction description. | A weighed and conditioned swatch or approved sample |
| Inside structure | Match the inside structure to season, climate and intended layering. | A labeled fabric swatch showing face and reverse |
| Silhouette | Review finished-garment photos and measurements on the intended size. | A fit sample in production-intent fabric |
| Decoration compatibility | Test the largest intended artwork on the selected fabric. | A decoration strike-off or salesman sample |
Key points to review with the manufacturer
1. Target GSM
GSM describes mass, not softness or durability. Two fabrics at the same weight can behave differently because of yarn, knit and finishing. For a buyer, this is best treated as a documented product decision rather than an informal preference. Request the nominal GSM plus an acceptable tolerance and construction description.
Keep the decision traceable through a weighed and conditioned swatch or approved sample. If the sample, material or process changes later, reopen this approval point instead of assuming the earlier decision still applies.
2. Inside structure
Brushed fleece, unbrushed fleece and French terry create different warmth and hand feel. For a buyer, this is best treated as a documented product decision rather than an informal preference. Match the inside structure to season, climate and intended layering.
Keep the decision traceable through a labeled fabric swatch showing face and reverse. If the sample, material or process changes later, reopen this approval point instead of assuming the earlier decision still applies.
3. Silhouette
Heavy fabric can support an oversized shape while lighter fabric may collapse or cling. For a buyer, this is best treated as a documented product decision rather than an informal preference. Review finished-garment photos and measurements on the intended size.
Keep the decision traceable through a fit sample in production-intent fabric. If the sample, material or process changes later, reopen this approval point instead of assuming the earlier decision still applies.
4. Decoration compatibility
Embroidery, high-density print and large transfers add weight and may distort soft fabrics. For a buyer, this is best treated as a documented product decision rather than an informal preference. Test the largest intended artwork on the selected fabric.
Keep the decision traceable through a decoration strike-off or salesman sample. If the sample, material or process changes later, reopen this approval point instead of assuming the earlier decision still applies.
Buyer approval checklist
Use this checklist before confirming the development route or releasing the style to the next stage. Add style-specific limits where a detail affects fit, function, appearance or customer information.
- Target retail season and destination climate
- Required hand feel: dry, smooth, brushed or loopback
- Pullover or zip construction and expected layering
- Desired silhouette and garment measurements
- Largest print or embroidery area
- Wash method and acceptable shrinkage range
Do not treat checked boxes as a substitute for samples. The checklist helps confirm that the relevant evidence exists and that buyer comments, supplier responses and approved references all point to the same version.
Common warning signs
Warning sign 1
A supplier recommends GSM without asking about end use. Ask for the missing evidence, identify the decision owner and record the agreed correction before the next production gate.
Warning sign 2
The swatch and garment sample use different finishes. Ask for the missing evidence, identify the decision owner and record the agreed correction before the next production gate.
Warning sign 3
Weight is confirmed but shrinkage and spirality are not. Ask for the missing evidence, identify the decision owner and record the agreed correction before the next production gate.
Warning sign 4
Decoration is approved only on a different fabric. Ask for the missing evidence, identify the decision owner and record the agreed correction before the next production gate.
Information to include in the RFQ
A focused RFQ helps the factory identify material, sampling and production constraints before quoting. Include the following details and attach drawings, reference photos or measurement files where they clarify the request.
- Product type and fit reference
- Preferred GSM range and inside structure
- Fiber-content preference
- Color quantity and size breakdown
- Decoration size, position and technique
If a detail is not yet decided, label it as open and ask for options rather than allowing an assumption to become part of the quote. Compare responses on the same scope, including sampling, labels, packing and delivery terms.
Next steps
Review Yinuo Apparel’s OEM and ODM development routes, see the company’s quality approach, or browse available apparel product references. These pages can help you decide which specifications are ready and which still need development.
For a feasibility review, send your product type, target quantity, color and size breakdown, material direction, artwork and delivery market. A complete brief makes it easier to identify the appropriate sample path and the approvals needed before production.