Pure Blue Japan NP-13.8oz-019 Nep Denim Jeans Straight Tapered 13.8oz Size Chart
Every published measurement for the Pure Blue Japan NP-13.8oz-019 Nep Denim Jeans Straight Tapered 13.8oz, size by size, widths flat and waist doubled, the numbers the tag size doesn't tell you.
In a size 36, the Pure Blue Japan NP-13.8oz-019 Nep Denim Jeans Straight Tapered 13.8oz measures 35″ waist, 12″ front rise, 13″ thigh and 7.3″ leg opening. Sizes on its chart run from 2″ under the tag to ½″ under it, and each size up adds 1″. From knee to hem, the leg narrows 1.4″.
| Size | Waist | Front Rise | Back Rise | Thigh | Knee | Leg Opening | Inseam |
|---|---|---|---|---|---|---|---|
| 30 | 29 | 10.5 | 14 | 11.3 | 7.5 | 6.3 | 33.5 |
| 31 | 30.5 | 11 | 14.5 | 11.5 | 7.5 | 6.3 | 33.5 |
| 32 | 31 | 11 | 14.5 | 12 | 7.8 | 6.5 | 33.5 |
| 33 | 32 | 11.3 | 15 | 12 | 8 | 6.8 | 33.5 |
| 34 | 33 | 11.5 | 15.3 | 12 | 8 | 6.8 | 33.5 |
| 36 | 35 | 12 | 15.5 | 13 | 8.7 | 7.3 | 33.5 |
| 38 | 37 | 12 | 16 | 13.5 | 9 | 7.5 | 33.5 |
| 40 | 38 | 12.5 | 16 | 14 | 9 | 7.5 | 33.5 |
| 42 | 40 | 13 | 16.5 | 14.3 | 9.5 | 8 | 33.5 |
| 44 | 42 | 13.5 | 17 | 14.5 | 9.5 | 8 | 33.5 |
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Listed under: Straight · Regular · Biggest Waists
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Where to buy
- Self Edge (opens in new tab)$345In stock
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About Pure Blue Japan
Established in 1997 as Syoaiya Inc. in Kojima, Okayama, Pure Blue Japan takes its name and philosophy from a deep appreciation for the color of natural indigo. The company emphasizes Japanese production throughout the dyeing, weaving, sewing, and finishing processes, continually exploring new ways to express indigo through fabric. It is especially known for denim with pronounced slub, irregular surface texture, and complex character that becomes more distinctive with wear. Rather than relying on prominent branding, Pure Blue Japan puts the emphasis on the fabric itself and the craftsmanship behind it.
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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.