Grade rule review and size curve checks (program consistency)
What this service is
Grade rule review and size curve checks (program consistency) is a fashion manufacturing fit and sizing service that validates grading before bulk production. We review grade rules, size jumps, and size curve logic so proportions stay balanced across the full size range and match your brand fit intent. This prevents size-to-size fit drift, reduces extra sample rounds, and improves e-commerce sizing consistency by locking a repeatable grading standard for bulk and reorders.
Where brands use it
New size range expansion, new fit block development, supplier changes, uniforms and teamwear programs, performance and stretch garments, and any category where grading errors drive returns (denim, tailoring, knitwear, activewear, childrenswear, extended sizing). It’s also valuable when a program runs across multiple factories and you need one consistent size curve season after season.
What you receive
A factory-ready grading review output including: confirmed grade rules by measurement type (chest/waist/hip, lengths, openings), size curve checks for proportional balance (shoulder and sleeve balance, rise relationships, thigh and leg shaping, hem and cuff openings), and practical guidance on tolerances by product type. You also receive clear recommendations where grading is over-aggressive or under-graded, plus change control so approved updates flow into the live tech pack before SMS, size sets, PPS, and bulk.
How delivery works
We confirm fit intent and base size first, then review grade rules and the size curve across your full size range. We check proportional balance, measurement relationships, and category risk points (for example sleeve balance in knits, hip grading in woven bottoms, rise and thigh grading in denim). Where required, we validate against samples or size sets and reconcile actual measurements to the spec. Once approved, we lock grade rules and the size curve as the program standard for bulk production and reorders.
What we need from you
Your tech pack measurement spec (POMs), size range, base size, current grade rules or grading spreadsheet (if you have one), fabric behaviour notes (woven/knit, stretch and recovery, shrinkage expectations), and your target customer/market. If you have existing fit blocks or return and fit feedback, we use it to refine the size curve and reduce future returns.
FAQ
What are grade rules? The rules for how measurements change between sizes. Good grade rules keep proportions balanced across the size range.
What is a size curve? The sizing progression from smallest to largest size, including how key measurements relate as size increases.
Why do some sizes fit “off”? Poor grading balance, inconsistent measurement methods, or fabric behaviour not accounted for. This service is designed to prevent that.
Do we need size sets? Not always, but size sets help when grading is new, the category is high-risk, or you need proof of consistency before bulk.
Will this help reorders? Yes. Locked grade rules and size curve standards become the repeat reference so future runs stay consistent.