Manufacturing

Pajama Size Grading

Size grading for sleepwear: turning an approved base-size pattern into a full size range that fits, with size sets and measurement checks before bulk.

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Tape measures, scissors and marking tools laid out on a workbench

Grading applied from your rules, or developed and proposed
Size sets produced so the grade is proven before bulk
Graded measurements built into the production check sheet

Grading turns one approved fit into a size range. It sounds mechanical and it is not: enlarging a pattern uniformly produces a largest size that fits nobody, because bust, shoulder, hip and length all need to move at different rates.

For sleepwear specifically, length grading deserves attention. A nightgown or a pair of sleep pants that grades correctly through the body can still be wrong in length at the extremes of the range — and length is the measurement customers notice immediately.

Grade from an approved fit, never before it

The order matters. Grade a base pattern that has not been signed off and any error is reproduced across every size, which turns one correction into a full-range correction.

Size sets are worth the time

A size set is one garment made in several sizes. It exists so you can look at and measure the range rather than trusting a graded spreadsheet.

It is genuinely optional when you are reusing a grade already proven in production. It is close to essential when the size chart is new, when you are entering a new market, or when you are adding sizes at the ends of an existing range.

Extended and petite sizes

Beyond a certain point, continuing a grade stops working and the size needs its own block — body proportions do not simply continue in the same direction. If extended or petite sizes are part of the plan, raise them before the base pattern is locked, not after the core sizes are in bulk.

When Buyers Need This

Situations this service answers

If none of these describe your project, this probably is not the step you need — tell us what you are actually trying to solve.

You have approved a fit in one size and need the full range
You are extending an existing range into larger or petite sizes
You are moving a style between markets with different size conventions
Customer feedback shows the fit is good in the middle sizes and wrong at the ends

Our Process

How this step runs

01
Base size fit approved first
Grading starts from a fit you have signed off. Grading an unapproved pattern multiplies the problem across every size.
02
Grade rules confirmed
We work to your grade rules if you have them. If not, we propose a set based on your size chart and target market and you review it.
03
Pattern graded
Each measurement point moves at its own rate — bust, shoulder, hip and length do not scale together.
04
Size set produced
One garment in several sizes so the range can be seen and measured, rather than trusted from a spreadsheet.
05
Adjustments and sign-off
Corrections are applied to the grade, and the graded chart becomes part of the production check sheet.

What We Need From You

Inputs required

The faster these arrive, the fewer rounds development takes.

An approved base-size fit sample
Your target size range and the market you are sizing for
Your grade rules, if you have them
Tolerances you accept per measurement point

Options

Choices available

Grading applied from your existing rules
Grade developed and proposed for your review
Size set across the full range, or only the extremes
Petite, tall or extended size blocks developed separately

Limitations

What this cannot do

Constraints stated up front are cheaper for both of us than constraints discovered in production.

Grading is not uniform scaling; a grade that looks correct on paper can still produce a poor largest size
Extended sizes often need their own block rather than a continued grade — we will say when that is the case
Grading cannot rescue a base fit that was never right

Quality

How it gets verified

Every size measured against the graded chart during production, not just the base size
Length grading checked on washed samples, since shrinkage compounds across longer garments
Size set retained alongside the sealed sample as reference

Step 6 of 10

Where this sits in production

Every order runs through the same sequence. Each step has its own page, its own approval, and its own way of going wrong.

← Before this

Pattern Making & Fit

Pajama pattern development: patterns built from your size chart, block or reference garment, then revised against measured fit comments before bulk.

After this →

Printing & Embroidery

Printing and embroidery for sleepwear: fabric printing, placement prints, embroidery and monogramming, with strike-offs and stitch-outs approved before bulk.

Related Pajamas

Products this applies to

FAQ

Size Grading — common questions

How much does a pajama sample cost?

Sample cost depends on the style, fabric and customization (printing, embroidery, special trims). We confirm the exact sample fee per project before sampling starts — share your design through the quote form for a precise figure.

How long does sampling take?

Sampling time depends on style complexity, fabric availability and the number of revision rounds. We confirm a sampling timeline with each sample order and keep you updated through development.

Can I use my own pajama design?

Yes. Send a tech pack, reference sample or reference photos and we handle pattern development, grading and sampling to your design. Your designs stay confidential to your project.

Will my fit sample be washed before I approve it?

Yes — we launder fit samples before sending them. Cotton shrinks, knits relax and viscose can distort, so a sample approved unwashed is not the garment your customer receives. Approving fit on a washed sample removes the most common cause of bulk fit complaints.

Can you source custom fabrics?

Yes. Beyond stock cotton, modal, satin, jersey, flannel and viscose options, we source custom blends, custom-dyed colors and custom prints. Custom-developed fabrics carry higher minimums, which we confirm during quoting.

Can you match Pantone colors?

Yes. For custom-dyed fabrics we produce lab dips against your Pantone reference for approval before bulk dyeing, so the production color matches the approved standard.

Who owns the pattern developed for my product?

Ask us and we will put it in writing before development starts. Pattern ownership is a commercial term rather than a fixed rule, and it is better agreed at the outset than assumed. Your designs, tech packs and reference materials stay confidential to your project either way.

Need size grading for your project?

Send your product requirements and we will come back with a plan for this step and a quotation for the whole order.

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