Iron Heart IH-634S-SBG 21oz Superblack Selvedge Denim Straight Jeans Size Chart
Every published measurement for the Iron Heart IH-634S-SBG 21oz Superblack Selvedge Denim Straight Jeans, 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-634S-SBG 21oz Superblack Selvedge Denim Straight Jeans measures 34″ waist, 11.25″ front rise, 13.25″ thigh and 9″ leg opening. Sizes on its chart run from 1″ under the tag to even with it, and each size up adds 1″. From knee to hem, the leg narrows ½″.
| Size | Waist | Front Rise | Back Rise | Thigh | Knee | Leg Opening | Inseam |
|---|---|---|---|---|---|---|---|
| 29 | 29 | 10 | 14 | 11.75 | 8.5 | 8 | 35.5 |
| 30 | 30 | 10.25 | 14.25 | 12 | 8.75 | 8.25 | 35.5 |
| 31 | 31 | 10.5 | 14.5 | 12.25 | 8.75 | 8.5 | 35.5 |
| 32 | 32 | 10.75 | 15 | 12.5 | 9 | 8.5 | 35.5 |
| 33 | 33 | 11 | 15.25 | 12.75 | 9.25 | 8.75 | 36.5 |
| 34 | 34 | 11.25 | 15.5 | 13.25 | 9.5 | 9 | 36.5 |
| 35 | 35 | 11.5 | 15.5 | 13.5 | 9.5 | 9 | 36.5 |
| 36 | 36 | 11.5 | 15.75 | 13.75 | 9.75 | 9.25 | 36.5 |
| 38 | 37 | 12 | 16 | 14.5 | 10.25 | 9.75 | 36.5 |
| 40 | 39 | 12.25 | 16.5 | 15 | 10.75 | 10.25 | 36.5 |
Scroll the table sideways for the rest of the columns.
Listed under: Straight · Regular
Find jeans that measure like the size 34 →
Jeans that fit like the Iron Heart IH-634S-SBG 21oz Superblack Selvedge Denim Straight Jeans
- Graph Zero "Green Indigo Skein Dyeing" 15oz Kasezome Selvedge Denim
- Pure Blue Japan USED-003 Natural Wash Neppy Selvedge Denim
- Studio D'Artisan 1907 14oz Sashiko Selvedge Denim
- TCB TCBJEANS20S TCB20's
- Samurai Jeans S510SC-KI 18oz Ecru Selvedge Denim
All 10 closest fits, size by size →
Where to buy
- BlackBlue (opens in new tab)$405Check availability
- Guilty Party (opens in new tab)$405Check availability
- Iron Shop Provisions (opens in new tab)$405Check availability
- Rivet and Hide (opens in new tab)$405Check availability
- Self Edge (opens in new tab)$405In stock
- Withered Fig (opens in new tab)$405Check availability
Some store links earn Indigo & Asphalt a commission. It never changes which stores appear or how results rank.
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
- / 20th Anniversary Collection / DH 21cm MIJ Plus REP SEXIH01 Remastered
- 14oz Selvedge Denim Medium/High Rise Tapered Cut Jeans Indigo/Black IH-888S-142ib
- 14oz Selvedge Denim Straight Cut Jeans 634S Black/Black IH-634S-14bb
- 1955S-142 14oz Indigo Denim Jean
- 634s 21oz Indigo Selvedge Jean
- 832 10oz Denim Painter
- BSPIH25-301 19oz Denim (Self Edge x Iron Heart)
- BSPIH25-633 19oz Denim (Self Edge x Iron Heart)
Read next
Embed this size chart
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.