What is custom apparel sizing and how is it different from standard size charts?

Custom apparel sizing means we build a size chart specifically for your brand — not a generic off-the-shelf template. Standard size charts apply the same measurements to every brand, which ignores differences in target customer, fit philosophy, and garment type. With custom sizing, we work with you to define measurements and grade rules that match your specific customer demographic and design aesthetic. The result is a fit that feels intentionally designed for your brand, not borrowed from someone else's.

How do you ensure size consistency across different garment styles in my collection?

We build a master size specification document for your brand that defines primary measurement points and grade rules. This document becomes the single source of truth for every style in your collection. Whether we are producing a slim-fit polo or a relaxed-fit hoodie, the underlying grade rules are consistent — we adjust only the design ease per style. Every production run is QC-checked against your master spec to ensure garments measure within tolerance, regardless of when or how many units you order.

Can you help me create a size chart if I do not have one yet?

Absolutely — this is one of our most common starting points. If you are launching a new brand and do not have a size chart, our pattern engineers will work with you to build one. We start by understanding your target customer (demographic, geography, fit preference) and your garment types. Then we draft a proposed size chart with full grade rules for your review. You receive a complete measurement specification you can use for this collection and all future production runs.

What is size grading and why does it matter for my brand?

Size grading controls how garment dimensions change between sizes — chest, waist, hip, and length increments from XS through 2XL and beyond. Good grading preserves proportion and fit intent across every size. Poor grading means your Medium fits beautifully but your 2XL is completely off. We build brand-specific grade rules so every size delivers the same experience, no matter where your customer falls on the spectrum.

Do you offer plus-size and extended size ranges?

Yes. We regularly produce extended size ranges from XS through 6XL, and we can build custom plus-size grade rules that account for the different proportional changes needed at larger sizes. Standard grading often fails at extended sizes because proportional relationships change. Our pattern engineers understand these nuances and build grade rules that maintain fit quality and comfort across the entire size spectrum — not just the middle of the range.

How do I provide my brand's size specifications for production?

Already have a size chart? Send it over — we accept Excel, PDF, or tech pack formats. Our pattern team reviews your specs and flags potential issues before sampling. No size chart yet? Ship us a reference garment that represents your ideal fit and we will reverse-engineer the measurements. Either way, you approve fit samples before a single production unit is cut.

Custom Fit & Grading

Custom Apparel Size Solutions for Brands That Demand Fit Consistency

Generic size charts are the silent killer of brand growth. We build you a custom apparel size system — precise grading, measurement guides, and fit samples — so every garment that ships reflects the quality your label promises.

Build Your Size Chart

The Cost of Generic Sizing

Why Guesswork Sizing Hurts Your Brand?

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Three ways off-the-shelf size charts quietly eat into your margins — and how a custom approach turns fit into a competitive advantage.

Inconsistent Fits

Generic sizing creates chaos across your product line — one style's medium is another style's large, and your customers notice. Without a custom size spec, you cannot guarantee that your XS fits like an XS should. Every return chips away at the trust you worked so hard to earn.

Costly Returns

Poor fit is the #1 reason for apparel returns — eating into your margins and eroding customer lifetime value. Every returned package means double shipping, restocking labor, and a customer who may never buy again. Brand-specific grading catches fit issues before they leave the factory.

Brand Damage

Every ill-fitting garment is a walking negative review. In the age of social proof, one bad fit post can cost you hundreds of future customers. When your sizing is dialed in, your product becomes your best marketing — customers wear it, post it, and recommend it.

Size Categories

Comprehensive Apparel Size Coverage for Every Collection

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From men's performance cuts to inclusive womenswear to kids' age-based grading — whatever category you sell, we build the sizing system behind it.

Men's Sizing

Precision grading for men's apparel — from slim-fit performance tees to relaxed-fit outerwear. We build size charts that match your target demographic, whether you're outfitting athletes or executives.

Women's Sizing

Women's fit is nuanced — bust, waist, and hip ratios vary dramatically across brands. We help you define a fit standard that your customers love, with grading that preserves silhouette across every size.

Kids' Sizing

Childrenswear sizing requires its own expertise — growth allowances, safety standards, and age-appropriate proportions. We grade kids' apparel from infant to teen with the same precision as our adult lines.

The Process

How We Build Your Brand's Apparel Size System?

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A proven four-step process that turns your fit vision into a production-grade spec — whether you are starting fresh or refining an existing line.

Define Your Fit Standard

Share your target customer profile and fit preferences — slim, regular, or relaxed. We translate your brand vision into precise measurement specs for every size in your range.

Build Your Grade Rules

Our pattern engineers develop custom grade rules — the incremental changes between sizes — ensuring proportional consistency from XS to 3XL and beyond.

Sample & Approve

We produce fit samples across your size range for your review. You see and feel the fit before committing to production. Revisions are fast and precise.

Scale to Production

Once approved, your size specs are locked into our production system. Every unit across every production run follows the same measurement standards — guaranteed consistency at any volume.

Measurement Guide

Six Key Measurements That Define Your Brand's Fit

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Accurate measurements are the foundation of every great fit. These six points form the backbone of your size specification — master them, and consistency follows.

Chest

Measure around the fullest part of the chest, keeping the tape horizontal and parallel to the floor. The tape should be snug but not tight — allow one finger's width of ease for accurate garment construction.

Waist

Find the natural waistline — the narrowest point between the ribcage and hips. Measure around this point with the tape parallel to the floor. For consistent grading, we standardize the waist measurement point across all your styles.

Hip measurement technique for accurate custom apparel size charts

Hips

Measure around the fullest part of the hips and seat, approximately 7-9 inches below the natural waist. Keep feet together and tape level — this measurement is critical for lower-body garment fit.

Inseam

Measure from the crotch seam to the desired hem length along the inside of the leg. We can adjust inseam grading to match your brand's fit philosophy — whether you prefer a cropped, standard, or tall proportion.

Shoulder Width

Measure across the back from shoulder point to shoulder point — where the shoulder meets the arm. This determines the hang and structure of tops, jackets, and outerwear across every size in your range.

Sleeve Length

Measure from the shoulder point down the outside of the arm to the wrist bone, with arm slightly bent. Our grading system adjusts sleeve length proportionally across sizes for a polished, tailored look.

Stop Guessing. Start Grading.

Your Brand Deserves Better Fit

Every brand has a different customer. Why would they all share the same size chart? Let us build one that matches your audience — and your ambition.

Build Your Custom Size Chart

Why LeelineWear

Why Leading Brands Trust Us With Their Fit

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Sizing is part science, part craft. Here's what sets our approach apart — and why your fit consistency begins on our factory floor.

Grading Expertise

20+ years of pattern grading across sportswear, activewear, and fashion. We know how a half-inch grade in the shoulder affects drape across three sizes — and we get it right.

Size Inclusivity

From XS to 6XL and custom plus-size ranges — we build charts that cover your entire audience. Inclusive sizing is engineered into your grade rules from day one, not patched on later.

Pattern Precision

Every pattern is drafted and graded in-house using professional CAD systems. Your grade rules are mathematically precise — no manual guesswork, no between-factory inconsistencies.

Global Fit Standards

We grade to US, UK, EU, and Asian fit standards. Selling across markets? We can produce the same style with region-specific grading so your fit feels local everywhere you ship.

Common Questions

Frequently Asked Apparel Size Questions

Answers to the questions brands ask most about custom apparel size specifications, grading, and fit consistency.

: Custom apparel sizing means we build a size chart specifically for your brand — not a generic off-the-shelf template. Standard size charts apply the same measurements to every brand, which ignores differences in target customer, fit philosophy, and garment type. With custom sizing, we work with you to define measurements and grade rules that match your specific customer demographic and design aesthetic. The result is a fit that feels intentionally designed for your brand, not borrowed from someone else's.

: We build a master size specification document for your brand that defines primary measurement points and grade rules. This document becomes the single source of truth for every style in your collection. Whether we are producing a slim-fit polo or a relaxed-fit hoodie, the underlying grade rules are consistent — we adjust only the design ease per style. Every production run is QC-checked against your master spec to ensure garments measure within tolerance, regardless of when or how many units you order.

: Absolutely — this is one of our most common starting points. If you are launching a new brand and do not have a size chart, our pattern engineers will work with you to build one. We start by understanding your target customer (demographic, geography, fit preference) and your garment types. Then we draft a proposed size chart with full grade rules for your review. You receive a complete measurement specification you can use for this collection and all future production runs.

: Size grading controls how garment dimensions change between sizes — chest, waist, hip, and length increments from XS through 2XL and beyond. Good grading preserves proportion and fit intent across every size. Poor grading means your Medium fits beautifully but your 2XL is completely off. We build brand-specific grade rules so every size delivers the same experience, no matter where your customer falls on the spectrum.

: Yes. We regularly produce extended size ranges from XS through 6XL, and we can build custom plus-size grade rules that account for the different proportional changes needed at larger sizes. Standard grading often fails at extended sizes because proportional relationships change. Our pattern engineers understand these nuances and build grade rules that maintain fit quality and comfort across the entire size spectrum — not just the middle of the range.

: Already have a size chart? Send it over — we accept Excel, PDF, or tech pack formats. Our pattern team reviews your specs and flags potential issues before sampling. No size chart yet? Ship us a reference garment that represents your ideal fit and we will reverse-engineer the measurements. Either way, you approve fit samples before a single production unit is cut.

Ready for Fit Consistency?

Ship Garments That Fit — Every Time

Send us your brand brief and we will prepare a custom size proposal within 24 hours — complete with measurement specs, grade rules, and a fit sample timeline. No obligation, no pressure.

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