Samurai Jeans

Samurai Jeans S500AX 18oz "AI Plus" Straight Cut Jean- Indigo Size Chart

Every published measurement for the Samurai Jeans S500AX 18oz "AI Plus" Straight Cut Jean- Indigo, size by size, widths flat and waist doubled, the numbers the tag size doesn't tell you.

CutRegular Straight
Maker's fit nameStraight
Fabric18oz Raw: Unwashed. Will shrink somewhat on the first wash. Cut Jean- Indigo
MillNot listed
Sizes35–40

In a size 38, the Samurai Jeans S500AX 18oz "AI Plus" Straight Cut Jean- Indigo measures 38″ waist, 11.38″ front rise, 13″ thigh and 9.12″ leg opening. Sizes on its chart run from ½″ under the tag to even with it, and each size up adds 0.76″. From knee to hem, the leg narrows 0.76″.

Measurements in inches, widths flat and waist doubled
SizeWaistFront RiseThighKneeLeg OpeningInseam
353510.8812.259.258.7535.75
3635.7611.3812.59.5935.25
383811.38139.889.1235.75
4039.511.513.6210.259.7536

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Listed under: Straight · Regular

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About Samurai Jeans

Founded in Osaka in 1997 by Toru Nogami, Samurai Jeans is known for heavyweight selvedge denim, with fabrics ranging from 15oz to 25oz. The brand pays close attention to cotton quality, climate, and dyeing methods, works with vintage machinery, and grows some of its own cotton in Hyogo Prefecture through its Samurai Cotton Farm project. Its jeans carry details such as iron buttons and silver lamé selvedge, along with imagery drawn from Sengoku-era samurai, and the S510XX remains one of its best-known models.

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Source: retailer size chart (opens in new tab). Last verified 2026-10-16. Always confirm with the retailer before buying — fits are re-cut seasonally.