Iron Heart IH-666S-SLB Size Chart
Every published measurement for the Iron Heart IH-666S-SLB, 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-SLB measures 34″ waist, 10.75″ front rise, 12.2″ thigh and 8″ leg opening. Sizes on its chart run from even with the tag to ½″ over it, and each size up adds 1″. From knee to hem, the leg narrows 0.6″.
| Size | Waist | Front Rise | Back Rise | Thigh | Knee | Leg Opening | Inseam |
|---|---|---|---|---|---|---|---|
| 30 | 30 | 10 | 14 | 11.1 | 8 | 7 | 35.75 |
| 31 | 31 | 10.25 | 14.25 | 11.2 | 8.2 | 7.25 | 35.6 |
| 32 | 32.5 | 10.5 | 14.5 | 11.5 | 8.25 | 7.4 | 35.75 |
| 33 | 33.5 | 10.5 | 15 | 11.8 | 8.5 | 7.75 | 35.75 |
| 34 | 34 | 10.75 | 15 | 12.2 | 8.6 | 8 | 36 |
| 35 | 35 | 11 | 15 | 12.5 | 9 | 8.25 | 35.75 |
| 36 | 36.5 | 11.25 | 15 | 12.75 | 9 | 8.25 | 35.75 |
| 38 | 38 | 11.5 | 15.6 | 13.25 | 9.4 | 8.75 | 36 |
Scroll the table sideways for the rest of the columns.
Find jeans that measure like the size 34 →
Jeans that fit like the Iron Heart IH-666S-SLB
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All 10 closest fits, size by size →
Where to buy
- BlackBlue (opens in new tab)$349In stock
- Iron Shop Provisions (opens in new tab)$350In stock
- Withered Fig (opens in new tab)$350Check 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.
More Iron Heart fits
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- 1955S-142 14oz Indigo Denim Jean
- 634s 21oz Indigo Selvedge Jean
- 832 10oz Denim Painter
- BSPIH25-301 19oz Denim (Self Edge x Iron Heart)
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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.