Big John

Big John M102SL SL Vintage Size Chart

Every published measurement for the Big John M102SL SL Vintage, size by size, widths flat and waist doubled, the numbers the tag size doesn't tell you.

CutRegular Straight
Maker's fit nameRegular Straight
FabricUnknown
MillNot listed
Sizes30–38

In a size 33, the Big John M102SL SL Vintage measures 32″ waist, 12.25″ front rise, 12″ thigh and 8.5″ leg opening. Sizes on its chart run from 1¾″ under the tag to 1″ under it, and each size up adds 1⅛″.

Measurements in inches, widths flat and waist doubled
SizeWaistFront RiseBack RiseThighLeg OpeningInseam
3028.7511.51511.57.7530
313011.7515.2511.5830
3230.751215.2511.758.2530
333212.2515.5128.530
343312.515.7512.258.7530
3634.7512.7516.2512.5930
3836.2513.2516.5139.2530

Scroll the table sideways for the rest of the columns.

Listed under: Straight · Regular

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About Big John

Big John began in 1940 as Maruo Clothing, a small sewing factory in Kojima, Okayama, founded by Kotaro Osaki to make workwear and school uniforms. The company turned to jeans in the 1960s, producing what it describes as Japan’s first domestically made jeans in 1965 under the Canton label, and launched the Big John name in 1967. In 1973, it introduced jeans made entirely in Japan, and it still produces its jeans domestically, including deep indigo selvedge denims developed for vintage-style fading.

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Source: retailer size chart (opens in new tab). Last verified 2026-10-31. Always confirm with the retailer before buying — fits are re-cut seasonally.