Japan Blue J308 9oz Lightweight Circle Straight Jeans Size Chart
Every published measurement for the Japan Blue J308 9oz Lightweight Circle Straight Jeans, size by size, widths flat and waist doubled, the numbers the tag size doesn't tell you.
In a size 34, the Japan Blue J308 9oz Lightweight Circle Straight Jeans measures 34.75″ waist, 11.5″ front rise, 13.5″ thigh and 7.75″ leg opening. Sizes on its chart run from ¾″ over the tag to 1½″ over it. From knee to hem, the leg narrows 1¼″.
| Size | Waist | Front Rise | Back Rise | Thigh | Knee | Leg Opening | Inseam |
|---|---|---|---|---|---|---|---|
| 30 | 31.5 | 11 | 14.75 | 12.25 | 8.25 | 7 | 31.75 |
| 32 | 33 | 11.25 | 15.25 | 12.75 | 8.5 | 7.25 | 31.75 |
| 34 | 34.75 | 11.5 | 15.75 | 13.5 | 9 | 7.75 | 31.75 |
| 36 | 37 | 11.75 | 16.25 | 14 | 9.5 | 7.75 | 31.75 |
| 38 | 39 | 12.5 | 16.5 | 14.75 | 10 | 8.75 | 31.75 |
Scroll the table sideways for the rest of the columns.
Listed under: Straight · Regular
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- Redcast Heritage (opens in new tab)€180Check availability
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About Japan Blue
Established in 2010 by the COLLECT mill in Kojima, Okayama, Japan Blue Jeans began as an in-house project of the Japan Blue Group, with Hiroki Kishimoto credited as its founder. The brand builds on the group’s own fabric development, holding that making jeans is making fabric, and its garments are cut, sewn, and finished in Kojima. Its selvedge denim is woven on vintage shuttle looms, often with rope dyeing and slub textures. The label launched with a single 14.8 oz. U.S. cotton selvedge fabric and now spans a wide range of weights and weaves.
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Source: retailer size chart (opens in new tab). Last verified 2026-09-01. Always confirm with the retailer before buying — fits are re-cut seasonally.