Iron Heart

Iron Heart IH-633N 17oz Natural Indigo Jeans Straight Tapered Size Chart

Every published measurement for the Iron Heart IH-633N 17oz Natural Indigo Jeans Straight Tapered, size by size, widths flat and waist doubled, the numbers the tag size doesn't tell you.

CutRegular Straight
Maker's fit nameStraight
Fabric17oz Natural Indigo
MillNot listed
Sizes29–40

In a size 33, the Iron Heart IH-633N 17oz Natural Indigo Jeans Straight Tapered measures 33″ waist, 10.5″ front rise, 12.5″ thigh and 7.75″ leg opening. Sizes on its chart run from ½″ under the tag to 1″ over it, and each size up adds ½″. From knee to hem, the leg narrows 1¼″.

Measurements in inches, widths flat and waist doubled
SizeWaistFront RiseBack RiseThighKneeLeg OpeningInseam
29309.7513.7511.258.25736
3030.510.251411.758.57.2536
313110.2514.25128.67.536
3232.510.414.512.18.757.636
333310.514.7512.597.7536
3434.510.751512.759.25836
3635.51115.2513.59.68.536
38381215.7214.25108.7536
404012.251614.7510.59.436

Scroll the table sideways for the rest of the columns.

Listed under: Straight · Regular · Low Rise · Biggest Waists

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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 2026-10-16. Always confirm with the retailer before buying — fits are re-cut seasonally.