Alpha and Numeric Sizing Meaning
The Apparel industry commonly uses alpha or numeric sizing for the clothing collection sampling and manufacturing size range. The difference between alpha and numeric sizing is the grading or grade rule.
Grading refers to pattern grading. The grade rule submitted in the full-size range spec sheet will guide the factory or pattern maker on how to grade the pattern to match the size range.
Alpha Sizing for Clothing
Alpha sizing is the size range named by letters such as XS, S, M, and L. This lettering is primarily universal.
In most cases, letter-type sizing applies to knit clothing.
The specific knit category garments such as T-shirts, Sweatshirts, Hoodies, Leggings, and Active Tank Tops/Sports Bras usually have an alpha sizing range as the alpha sizing chart can cover a broader range of body sizes.
The standard grading rule for Alpha Sizing is 2 inches circumference between sizes (all around). For larger clothing sizes, the grade rule will go up to 3 inches (all around).
The actual grade rule will depend on the specific brand’s clothing fit.
Visit TAAS blog to learn more about alpha and numeric sizing.
Numeric Sizing for Clothing
US women’s wear sizing uses numbers such as 0, 2, 4, 6, 8, 10, and so on. European equivalent uses numbers more related to the actual body measurements, such as 34, 36, 38, 40, 42.
Numeric sizing is commonly used for clothing made of woven fabrics in specific fit essential styles.
Clothing includes dress pants, shirts, structured jackets, and fitted dresses.
The standard grading rule for Numeric Sizing is 1 inch all around or in circumference. For sizes above 10 and 12, the grade rule goes up to 2 or more inches all around.