What a Sample Size Actually Is

A sample size is the specific set of measurements a brand designs and fits its initial garment against — a fit model is typically chosen because their measurements closely match a brand’s established sample size for a given category.

How Grading Extends From the Sample

Once a garment’s fit is finalized against the sample size, the pattern is “graded” — mathematically scaled up and down to create the brand’s full size range — making the accuracy of the original sample-size fit especially important, since errors carry through the entire size range.

Why This Makes a Fit Model’s Precision So Consequential

Because grading extends a single fit decision across an entire size range, imprecise feedback at the sample-size fitting stage doesn’t just affect one garment — it can affect how well the entire product line fits every size a brand sells.

Different Fit Models for Different Categories

A brand with multiple product lines (swimwear, curve sizing, maternity, as seen across this catalog’s own categories) may use different fit models whose measurements match each specific category’s sample size, rather than a single fit model across every line.