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| Decision field | Open accessWRAP Certified FacilitiesGlobalRemove | Open accessNMSU Pattern Alteration GuideUnited States · North AmericaRemove | Open accessPattern Grading & Size-Run Validation RecordGlobalRemove |
|---|---|---|---|
| Decision fit | |||
| Primary job | Check standards | Find patterns & fit | Find patterns & fit |
| Also useful for | No additional job recorded | No additional job recorded | No additional job recorded |
| Area | Production | Patterns & fit | Patterns & fit |
| Best for | Checking a named facility's current WRAP certification or discovering listed production units | Checking a common flat-pattern alteration method | Auditing inherited grade rules or controlling a new multi-size pattern release from approved targets through sample evidence |
| Know before using | A listed facility and its certification status do not establish product quality, capacity, availability, upstream coverage, whole-chain performance, buyer fit, or the scope and result of a particular order. Confirm the exact legal entity and production unit, current certificate and scope, product and process capability, capacity, monitoring evidence, corrective actions, references, and commercial terms directly. | The guide's general womenswear diagrams and ease ranges are teaching examples, not an individual diagnosis, current commercial-pattern specification, or complete fitting course. A named symptom can have several causes, and alterations may affect adjoining seams, facings, collars, sleeves, balance, and style. Verify the method against the exact pattern and test the coordinated changes on a muslin. | The record does not create a production grade, supply universal increments or breakpoints, validate a CAD file or fit population, reproduce licensed standards, or replace qualified anthropometric, pattern, technical-design, fit, quality, accessibility, safety, statistical, and user-research review. |
| Practical access | |||
| For | Apparel brands | Makers | Apparel brands |
| Location or jurisdiction | Global | United States · North America | Global |
| Access | Open access | Open access | Open access |
| Format | Directory | Reference | Stitch Authority |
| Source type | Official registry | Government guidance | Stitch Authority |
| Source and review | |||
| What the source establishes | WRAP states that thousands of WRAP-certified facilities operate worldwide and that buyers can use the public route to verify a named factory's certification or find certified manufacturers for apparel, footwear, sewn and leather goods, textiles, and related products. The page exposes certified facilities and monitoring firms as separate routes. | New Mexico State University's current Cooperative Extension Guide C-228 explains three alteration methods, folding out fullness, slashing and spreading or overlapping, and redrawing darts or seams. It provides illustrated bodice, sleeve, skirt, and trouser examples and tells readers to compare body measurements plus intended ease with the pattern while preserving grain, design lines, related-piece changes, and comfort ease. | The guide cites current ISO body-table, size-designation, and garment-measurement boundaries plus two peer-reviewed studies that tested the relationship between conventional grade rules, anthropometric evidence, and garment fit; it requires product-specific target deltas and validation instead of publishing universal increments. |
| Linked page reviewed | Jul 28, 2026 | Jul 21, 2026 | Jul 27, 2026 |
| Next review due | Oct 26, 2026 | Oct 19, 2026 | Jul 27, 2027 |
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