Short Answer (Citable)

What the Size Grading Service Includes

Size grading at Ginwen is a development service, not just a pattern operation. It covers the creation of a graded pattern set, the documentation of grade rules, sample verification across sizes, and storage of the files for future production. The service is included in the standard sample development process for custom jackets.

• Base pattern development in the size you choose as the foundation of the range
• Grade rule creation based on your size chart and target market
• Graded pattern set for the full size range, from XS to XXL or equivalent
• Multi-size sample production to verify grading accuracy
• Measurement checks across all sizes against the size chart
• Pattern and grade file storage for reorders and future seasons

The grading service applies to both men's and women's outerwear and works with any of the product types Ginwen produces, including down jackets, puffer jackets, and varsity styles. The grade rules are specific to the garment type, because the proportions that change between sizes differ by category.

For brands with their own grade rules, Ginwen can apply your rules to the base pattern instead of creating new ones. This is common for brands that have developed their own sizing system over multiple seasons and want consistency across factories.

How the Grading Process Works

The grading process is structured so that each step is checked before the next begins. Skipping steps is how grading errors happen, so the process is followed consistently for every style.

1. The base size pattern is developed and fitted, typically the middle of your size range
2. Your size chart is reviewed and the measurement points are confirmed, including chest, waist, shoulder, sleeve, and body length
3. Grade increments are set for each measurement point, defining how much each size grows
4. The pattern is graded into the full range using the approved increments
5. Key measurements are checked across the range for consistency and proportion
6. Multi-size samples are produced and measured against the chart to verify the grading
7. Corrections are applied to the pattern and the final files are stored

Grade increments are not uniform across the garment. The chest grows more between sizes than the sleeve length, and the collar and cuffs grow very little. A good grade rule set encodes these differences, which is why grading is a pattern-making skill rather than a scaling operation.

The verification step is what separates professional grading from guesswork. Measuring samples in multiple sizes against the chart catches grading drift at the extremes of the range, where scaling errors always appear first.

Grading for Down Jackets and Puffer Jackets

Down jackets and puffer jackets have grading considerations that regular garments do not. The insulation changes how the garment behaves across sizes, and the pattern must account for it.

• Baffle widths are graded so the proportion of the quilt pattern stays visually consistent across sizes
• Fill distribution is planned per size so the warmth-to-size relationship is correct, not just the outer measurements
• Shell and lining are graded as a matched pair so the two layers continue to align in every size
• Zipper length and placement are adjusted per size so the closure sits correctly on the body
• Hood proportions are graded to keep the hood visually balanced with the body of the jacket

A common grading failure in down jackets is a garment that fits in the base size but looks wrong in the extreme sizes, usually because the baffle pattern did not grade with the body. The multi-size sample stage catches this before bulk, when it is still a pattern change rather than a production disaster.

Fill weight also scales with size: a larger jacket needs more fill to deliver the same warmth per unit of body coverage. The fill specification is set per size during development, so the XL is not simply a stretched small with the same fill weight.

International Fit Standards Supported

Grading is always done to a size standard, and the choice of standard affects both the numbers and the fit. Ginwen grades to the standard of your target market and adjusts the pattern for that market's typical body proportions and fit preferences.

The table shows the typical starting points, but your size chart always overrides the general standard. If your US brand uses a slim-fit chart, the pattern is graded to your chart, not to a generic US average. The standard provides the starting proportions; your chart sets the final measurements.

For brands selling into multiple markets, separate size runs can be developed from the same base pattern. The base fit is adjusted per market and graded with market-appropriate increments, and each run is documented as its own size set within the order.

Multi-Size Sample Verification

A graded pattern set is only trustworthy after samples prove it. Ginwen produces fit samples in multiple sizes for verification, so the grading is confirmed on real garments rather than on the computer screen.

• The base size sample verifies overall fit, proportions, and construction
• Additional samples at the extremes of the range verify grading accuracy where errors appear first
• Each sample is measured against the size chart at the agreed measurement points
• Deviations are corrected on the pattern and re-verified before bulk
• The approved multi-size set becomes the production benchmark

Sampling takes 7 to 14 days per round depending on complexity, and multi-size verification adds a few days for the additional samples. For most styles, one verification round is enough; styles with unusual proportions or new fits may need a second round.

The verified pattern set is what production uses, and the stored files mean the next order of the same style starts from the approved grading rather than from a new pattern. This is the practical benefit of grading as a service: it is an asset the brand owns for the life of the style.

Grading for Startup Brands

Size grading is often associated with large programs, but the service is structured to work for startup brands and small first orders. The standard terms at Ginwen keep grading accessible at any order size.

1. The 50-piece MOQ per style applies to the bulk order, not to sampling, so a startup can grade a full size range and test it with a small first order
2. Sample fees range from $50 to $200 per sample and are credited against the first bulk order
3. Sampling runs in 7 to 14 day rounds, so the grading verification fits a normal development schedule
4. Starting with four to five core sizes keeps the first order affordable while the full range remains graded for later
5. The graded pattern files are stored, so expanding the size range on reorders costs nothing extra

For a startup, the smart sequence is to grade the full range once but produce only the core sizes first. The pattern work is done, the fit is verified, and the market data from the first season tells you which sizes deserve inventory on the reorder.

This approach avoids the classic startup mistake of spreading a small order across too many sizes, leaving each size with too few pieces to matter. Grading is a fixed development cost; inventory is a variable risk. Doing the first once and the second carefully is the professional pattern.

What to Provide to Start a Grading Project

The grading result is only as good as the input, and a complete brief at the start saves sampling rounds later. The information below is what Ginwen needs to grade a style correctly the first time.

• Size chart with measurements for each size in the range
• Base size selection, usually the middle size of the range
• Target fit description: relaxed, regular, or slim, and the intended layering
• Reference garment or detailed measurement of a garment whose fit you want to match
• Your own grade rules if the brand has established ones
• Target market or markets, so the fit standard can be selected

If any of this is missing, the pattern team works from defaults and flags the assumptions for your review rather than guessing silently. The first sample is then the checkpoint where the assumptions are confirmed or corrected, which keeps the process transparent.

Size grading is one of those services that is invisible when done well and expensive when done badly. Done well, it means every size of your jacket fits and looks like the sample. Done badly, it means returns, bad reviews, and a re-grading bill. The in-house grading and multi-size verification process at Ginwen is designed to deliver the first outcome.

Common Questions About Size Grading

Buyers ask a consistent set of questions when they first evaluate a grading service. The answers below cover the details that affect planning and cost.

1. Is grading charged separately? No, grading is part of the standard sample development process for custom jackets at Ginwen, not a separate line item.
2. How many sizes can be graded? There is no fixed limit; typical runs range from four to ten sizes, and larger ranges are handled the same way.
3. Can grading be done from a single size sample? A base pattern is required, which is why development starts from one base size and expands from it.
4. Do reorders need re-grading? No, the stored pattern and grade files are reused, which is why repeat runs are faster and more consistent.
5. Can the same style grade for two markets at once? Yes, separate size runs for different markets can be developed from the same base pattern.
6. Who owns the graded pattern files? The files are kept by Ginwen for production, and the brand owns the size chart and specification; the arrangement is confirmed at order start.

If your question is not listed here, raise it during the feasibility review before sampling starts. Grading decisions made early are nearly free; the same decisions made after production begins are expensive.