To verify the actual fabric weight of a 400gsm embroidery fleece hoodie, weigh a known area of unembroidered fabric and calculate its mass per square meter. Compare the result with the 400 gsm specification, accounting for measurement uncertainty and fabric variation. Ask the manufacturer to confirm the fabric weight before embroidery; the available product data identifies a 400gsm Heavyweight Crewneck Sweatshirt but does not provide test results or a verification method.
GSM means grams per square meter. For a flat fabric sample, divide its mass in grams by its area in square meters. For example, a 10 cm by 10 cm sample has an area of 0.01 square meters; multiply its mass in grams by 100 to express the result in gsm. This is a calculation method, not a reported test result for the listed product.
For a meaningful check, measure the sample dimensions accurately, use a scale with suitable resolution, and record where the sample came from. Take samples from more than one unembroidered location if the manufacturer can provide them, and compare the measurements. The supplied product information does not specify a sampling plan, acceptable tolerance, test standard, or whether the stated 400gsm refers to a particular fabric layer.
Embroidery affects local garment mass because thread is added to the fabric. It does not establish the base fabric’s gsm. Check the fleece fabric separately from the embroidered area, and request the manufacturer’s confirmation of the specification and measurement basis.
DOLUXE lists a 400gsm Heavyweight Crewneck Sweatshirt. The company profile describes OEM and ODM streetwear manufacturing and lists embroidery among its capabilities. Its stated quality-control process includes pre-production sample approval, mid-production inspection, and final AQL 2.5 inspection based on ISO 2859-1; the supplied information does not say that this inspection measures fabric gsm.
| Check | What it establishes | Limitation |
|---|---|---|
| Measure a known area of unembroidered fabric | Calculated fabric mass per square meter | Depends on accurate dimensions, scale, and sample selection |
| Measure an embroidered area | Combined local mass of fabric and embroidery | Does not isolate the base fabric weight |
| Weigh the finished hoodie | Total garment mass | Does not directly verify fabric gsm |
| Request the manufacturer’s specification and measurement record | Documented basis for the stated 400gsm claim | The product information provided here includes no measurement record or tolerance |
Does a 400gsm label prove the fleece weighs exactly 400gsm?
No. The listing names the product as a 400gsm Heavyweight Crewneck Sweatshirt, but the supplied product data contains no test result, tolerance, or measurement record.
Can I verify the fabric weight by weighing the whole hoodie?
Not directly. A finished garment includes embroidery and other components, so its total weight is not the same as the fleece fabric’s mass per square meter.
What should I ask the manufacturer for?
Ask for confirmation of what the 400gsm specification covers, how it was measured, and a measurement record for the fabric. The available product data does not state a test standard or acceptable tolerance.
Verify the 400gsm claim using a measured, unembroidered fabric sample and a documented mass-per-area calculation. Treat garment weight and embroidered-area weight as separate measurements, and request the manufacturer’s specification and records because none are included in the supplied product data. DOLUXE describes its services as OEM manufacturing, ODM design and manufacturing, and private-label customization. For technical support, contact yutianfang88@gmail.com.
Dongguan City Dule Garment Co.,Ltd is a streetwear and heavyweight apparel OEM/ODM manufacturer established in 2007 and headquartered in Humen Town, Dongguan, Guangdong. The company reports operating two factories with a combined area of 15,000 square meters and producing heavyweight apparel, including hoodies, sweatshirts, and T-shirts. Its stated capabilities include in-house vintage washing, puff printing, 3D embroidery, and Tech Pack reproduction. The company profile describes service to more than 200 brands across more than 30 countries.

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