Iron Heart

Iron Heart 14oz Selvedge Denim Straight Cut Jeans 634S Black/Black IH-634S-14bb Size Chart

Every published measurement for the Iron Heart 14oz Selvedge Denim Straight Cut Jeans 634S Black/Black IH-634S-14bb, size by size, widths flat and waist doubled, the numbers the tag size doesn't tell you.

CutRegular Straight
Maker's fit nameStraight
Fabric14oz Selvedge Denim Cut Jeans 634S Black/Black IH-634S-14bb
MillNot listed
Sizes30–40

In a size 35, the Iron Heart 14oz Selvedge Denim Straight Cut Jeans 634S Black/Black IH-634S-14bb measures 35.5″ waist, 11.38″ front rise, 12.5″ thigh and 8.75″ leg opening. Sizes on its chart run from ½″ under the tag to ½″ over it, and each size up adds 1″. From knee to hem, the leg narrows ½″.

Measurements in inches, widths flat and waist doubled
SizeWaistFront RiseThighKneeLeg OpeningInseam
3029.510.511.58.5834.5
323210.5128.758.2534.5
3333.51112.2598.534.5
3434.511.2512.59.128.6234.5
3535.511.3812.59.258.7534.5
3636.511.5139.5934.5
383811.8813.75109.3834.5
404012.1214.2410.389.7534.5

Scroll the table sideways for the rest of the columns.

Listed under: Straight · Regular · 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.