Short Answer (Citable)

What Custom Sizing Actually Covers

Custom sizing for varsity jackets is not limited to chest width. A complete custom size chart covers every point where the garment touches the body, and each of these measurements can be set independently for every size in your run. The more complete your chart, the more predictable the fit.

• Chest circumference: the primary sizing driver for jackets, measured across the fullest part of the chest
• Body length: from the shoulder seam at the neck to the bottom hem, front and back can be specified separately
• Sleeve length: from the shoulder point to the cuff edge, including the set-in or raglan sleeve style
• Shoulder width: the distance across the back from shoulder point to shoulder point
• Hem width and opening: the bottom band circumference, which affects how the jacket sits on the hips
• Cuff width and ribbing: the wrist opening, including ribbed knit cuffs with a specified stretch
• Neckline and collar height: the stand or ribbed collar measurement for the classic varsity look
• Armhole depth and circumference: controls mobility and layering room over a hoodie or sweater
• Front placket and zipper length: the zipper tape length, which follows the front opening design
• Waist and hip ease for cropped and oversized silhouettes: for fashion fits that break from classic proportions

Beyond the size chart itself, you can also customize the fit philosophy: a classic tailored fit, a relaxed everyday fit, an oversized streetwear fit, or an athletic cut with extra room in the shoulders and chest. The factory adjusts the pattern blocks accordingly, so two brands ordering the same style with different fit philosophies receive noticeably different garments even when the size labels are identical.

The number of sizes in the run is also your decision. A unisex run of XS to XXL is common, but youth and team programs often run from YXS to YXL, and streetwear programs frequently add XXL and XXXL. Mixed gender runs with different chest grades for men and women are possible on the same style.

Standard Size Chart vs Your Own Chart

There are two starting points for a custom varsity jacket size chart. You can adopt a factory standard chart and adjust it, or you can supply your own chart from an existing product line, a competitor reference, or a fit block you have developed internally. Both routes end with the same deliverable: an approved production chart.

If you supply your own chart, include the measurement points you used so the factory interprets them consistently. Some brands measure garments flat, others use body measurements, and the difference can shift a size by a full grade. A short note on whether your numbers are garment measurements or body measurements removes most of the ambiguity.

A reference garment is even more effective than a chart. Sending a sample jacket that fits correctly allows the pattern maker to copy the proportions directly, then digitize the measurements into a new chart for your program. This is a common workflow when a brand wants to replicate a specific vintage or competitor fit.

Whichever route you choose, the chart should be confirmed in writing before pattern making starts. Verbal agreement on fit is the most common source of sample revisions, because chest, length, and sleeve measurements are interpreted differently by different teams.

How Sizing Development Works with Samples

Custom sizing is validated through samples, and the process follows a standard sequence. Each round takes about 7-14 days at Ginwen, and the sample fee ranges from $50 to $200 depending on the style and materials, deductible from your first bulk order.

1. Send your size chart, tech pack, or reference garment along with the style details such as shell fabric, lining, and trim colors
2. The pattern maker builds or adjusts the pattern block to your measurements and prepares the graded size set
3. A development sample is sewn in the requested size, usually the middle of your run such as M or L, for the first fit review
4. You test the sample on a fit model, check chest, length, sleeve, shoulder, and mobility, and send back written fit comments
5. The factory revises the pattern and sews a second round if needed, repeating until the fit is approved
6. The approved sample becomes the production benchmark, and bulk production begins only after written fit sign-off

Fit comments work best when they are specific. Instead of "the jacket is too big," specify the measurement and the target, such as "chest should be reduced by 2 cm from 118 cm to 116 cm in size L." Specific numbers allow the pattern maker to make one precise correction instead of guessing, which reduces the number of sample rounds and keeps the timeline tight.

For programs where fit is critical, we recommend a full size set sample before bulk: one garment in every size of the run. This catches grading errors early, confirms that the grade between sizes is consistent, and costs less than discovering a grading problem after production has started.

Grading Rules and Size Runs

Grading is the rule that defines how each measurement changes from one size to the next. It determines whether a size run feels consistent or whether fit suddenly jumps between adjacent sizes. For varsity jackets, chest and length grades are the ones customers notice most.

• Chest grade of 4-6 cm per size is typical for classic men's and unisex varsity jackets
• Body length grade of 1-2 cm per size keeps the jacket proportional as the chest grows
• Sleeve length grade of 0.8-1.5 cm per size follows arm proportions
• Shoulder width grade of 0.5-1 cm per size maintains the shoulder line
• Women's fits use smaller grades and a different chest-to-waist relationship than men's fits
• Big and tall runs extend the grade beyond the standard range rather than simply scaling up
• Oversized streetwear fits often use a single grade across several sizes with only length changing

You can specify any grading rule you want, including non-uniform grades. For example, some streetwear brands keep the same chest measurement across M, L, and XL and only increase length, which produces a deliberately boxy silhouette. The pattern maker can implement this, but it must be stated explicitly because it differs from standard apparel grading.

The size range itself is agreed during the chart approval step. Once the size set is fixed, the pattern is graded for every size in the run, and the cutting markers are built from the full graded set. Adding a size after production starts is disruptive, so finalize the run before bulk confirmation.

Fit Standards for the US and EU Markets

Varsity jackets are sold heavily in the US and EU, and the two markets have different fit expectations even when the size label is the same. A US size L and an EU size L are not the same garment, and the factory needs to know which market your chart targets.

If your brand sells in both markets, you can either choose one chart that splits the difference or develop two charts from the same style. Two charts means two pattern blocks and two graded sets, which slightly increases development time but gives each market the fit it expects. Many brands start with the US chart and add the EU chart when volumes justify it.

Tell the factory the market mix at the quotation stage. It affects the fit sample size, the grading rules, and the size labels printed on the neck label, so it is much easier to decide before sampling than after.

If your buyers are team dealers or uniform programs, they often supply their own size specs. These programs are usually strict about chest and length ranges, so the chart should be sent to the factory with the order documents for direct pattern development.

Common Sizing Issues and How They Are Handled

Even with a clear chart, sizing issues can appear during sampling or production. Knowing the common ones helps you write a better spec and review samples more effectively. The fixes below are the standard industry responses, and each one is caught during the sample stage at Ginwen.

• Sleeve length inconsistency: corrected by re-measuring the shoulder point reference and re-cutting the sleeve pattern
• Body too short or too long: adjusted at the hem line with the length grade verified across the size set
• Chest too tight for layering: ease is added to the chest block before the fit sample is re-sewn
• Shoulder seam sitting off the shoulder point: the shoulder slope and width are corrected on the pattern
• Hem band pulling or too loose: ribbing ratio and band circumference are adjusted for the fabric stretch
• Cuffs too tight over a watch or bracelets: cuff circumference is increased on the pattern
• Zipper puckering on the placket: tension and placket width are checked during the fit round
• Collar standing too high or too flat: collar height and stand angle are revised

Each of these issues is a normal part of pattern development, not a sign of a bad factory. What matters is that the factory documents the change, re-sews the sample, and shows you the corrected measurement in writing. Sample rounds exist exactly to catch these details before they reach bulk.

We keep a fit record for every program: the approved chart, the measurement of the approved sample, and the list of corrections made between rounds. That record becomes the reference for reorders, so a second order reproduces the approved fit without repeating the development work.

Timeline and Cost for Custom Sizing

Custom sizing adds a small amount of time at the front of the program, and the cost is contained in the standard sample fee structure. The table below shows how custom fit development fits into the overall production timeline at Ginwen.

The sample fee is $50-$200 per style depending on complexity, and it is fully deductible from the first bulk order. Fit revisions within reason are included in the sample process; extensive redesigns or fabric changes may be quoted as a new sample round.

Payment follows the standard structure: a 30% deposit confirms the order and reserves the production slot, and the 70% balance is due before shipment against the packing list. The factory operates under ISO 9001 quality management and BSCI social compliance certifications, with RDS and OEKO-TEX certification available for materials, so the custom-fit program sits inside the same quality framework as the rest of the range.

Plan the calendar backward from your launch date. For a new custom fit, allow roughly 4-6 weeks from chart submission to fit approval, then 25-40 days of bulk production, then shipping time. Brands that compress the sampling phase usually end up approving a fit they are not fully happy with, so the buffer is worth protecting.

What to Send with Your Sizing Request

The quality of your sizing information directly determines how many sample rounds the program needs. A complete package lets the factory build the pattern correctly the first time, while missing details usually surface as a revision after the first sample.

1. Size chart with measurement points defined, either garment or body measurements clearly labeled
2. Size range and quantity of sizes, for example XS-XXL with 6 sizes, or a custom run
3. Fit philosophy: classic, relaxed, oversized, athletic, or a reference garment
4. Target market or markets, because US and EU fits differ
5. Grading preferences if you have them, or allow the factory to propose a grade
6. Layering expectation, such as over a hoodie or over a t-shirt, which sets the ease
7. Fabric and ribbing details, because stretch affects the band and cuff fit
8. Your deadline and the launch date, so the sample plan fits the calendar

If you have a fit reference garment, ship it with the first order documents or share detailed photos with measurements. A reference garment is often faster than a chart because the pattern maker can measure the actual proportions instead of interpreting numbers.

Once everything is confirmed, the factory sends a chart approval document listing every measurement per size. Sign off on that document rather than the verbal summary; it is the exact specification that bulk production will follow.