Iron Heart IH-666S-UHR Size Chart
Every published measurement for the Iron Heart IH-666S-UHR, size by size, widths flat and waist doubled, the numbers the tag size doesn't tell you.
In a size 34, the Iron Heart IH-666S-UHR measures 35″ waist, 11″ front rise, 12.5″ thigh and 9″ leg opening. Sizes on its chart run from 1″ over the tag to 3″ over it, and each size up adds 1″. From knee to hem, the leg narrows ¼″.
| Size | Waist | Front Rise | Back Rise | Thigh | Knee | Leg Opening | Inseam |
|---|---|---|---|---|---|---|---|
| 30 | 31 | 10.4 | 14 | 11.25 | 8.25 | 8 | 36.75 |
| 31 | 32 | 10.5 | 14.6 | 11.5 | 8.5 | 8 | 37 |
| 32 | 33 | 10.75 | 14.6 | 12 | 8.75 | 8.25 | 36.5 |
| 33 | 34.5 | 11 | 14.6 | 12.25 | 9 | 8.5 | 36.5 |
| 34 | 35 | 11 | 14.75 | 12.5 | 9.25 | 9 | 36.5 |
| 35 | 36.5 | 11.25 | 15 | 12.75 | 9.25 | 9 | 36.5 |
| 36 | 37.5 | 11.5 | 15.25 | 13.25 | 9.6 | 9.1 | 36.5 |
| 38 | 41 | 12 | 16 | 13.75 | 10 | 9.5 | 36.75 |
Scroll the table sideways for the rest of the columns.
Listed under: Straight · Slim · Biggest Waists
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Where to buy
- Withered Fig (opens in new tab)$395Check availability
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About Iron Heart
Established in 2002 by Shinichi Haraki, Iron Heart began as a clothing brand for Japan’s motorcycling community, drawing on Haraki’s two decades in the Japanese garment industry, where he started as a pattern maker. Its company, Works Inc, is based in Japan with offices in Shibuya and Hachioji, and works mostly with small, family-run mills and workshops. The brand is known for heavyweight denim and durable fabrics, including Japanese-made jeans in cloth as heavy as 21oz and beyond.
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Source: retailer size chart (opens in new tab). Last verified 2026-09-22. Always confirm with the retailer before buying — fits are re-cut seasonally.