The Iron Heart IH-634N Natural Indigo in 17oz Japanese selvedge denim is available at Rugged Gentlemen Shoppe with fast local shipping and easy returns. Due to limited production, certain sizes can be hard to find once they sell through. If your size is currently available, it may be worth securing it while stock lasts.

Our medium rise straight cut, constructed from 17oz natural indigo/organic cotton selvedge denim. Initially, this denim will be very reluctant to give up its indigo and takes a long time to start fading. However, once fade patterns do start to develop, they will do so with lots of contrast.

Our Fabric Notes

This 17oz natural indigo denim offers a substantial feel with a slightly different tone and aging character compared to standard rope-dyed indigo. The fabric balances durability with a more nuanced color evolution as it wears in.

Our Fit Notes

The 634 is Iron Heart’s classic straight cut, offering a mid rise and an even fit through the leg. It provides more room than the 555 and 666, making it a reliable reference point for those new to the brand.

Who This Is For

Best for those who prefer a traditional straight-leg fit and a balanced, all-around silhouette. A good option for those who want something slightly different from classic indigo while still retaining a mid-to-heavyweight denim feel.

Made In Japan

• Designed by Shinichi Haraki, handmade by WORKS INC. in Japan

634 Straight Cut

• Traditional straight cut, inspired by the 1966 Levi’s 501
• Medium Rise
• Straight leg profile with a slight taper from knee to hem
• Wider leg opening to accommodate most types of boots and footwear
• Classic 5-pocket design

17oz Japanese Selvedge Denim - Natural Indigo

• 100% organic cotton
• Natural indigo rope-dyed warp/ white weft
• Right-hand twill weave
• This denim will slowly fade through wear and washing

Hardware & Construction

• Tradition button fly
• Iron Heart branded tack button at waistband
• Works Inc branded pocket rivets
• Hidden rivets
• Poly/cotton stitching for increased strength
• Single and double needle chain stitch construction
• Belt loops anchored at three points and sewn into the waistband
• Heavy cotton pocket bags

Selvedge ID

• Sideseam, fly, and coin pocket selvedge ID

Leather Patch

• Lightweight vegetable-tanned steerhide
• Stitched on all sides
• Dyed Iron Heart graphic
• Please note: Continued washing (especially at higher temperatures) may cause shrinkage and deformities

Sanforized & One-Washed

• Sanforization is a post-weave mechanical process which removes most potential shrinkage from a fabric before garment construction
• To further reduce the risk of shrinkage, we wash the completed garment in an aggressive industrial washing machine. This process removes virtually all potential shrinkage.
• No further shrinkage is expected when washed according to our care guidelines

Stretch Details

• The waist will stretch out approximately 1" with wear. All other dimensions that are put under pressure will stretch proportionally to the waist

Care Guidelines

• We recommend washing this garment at 30°C with a low (or no) spin cycle. Hang dry, do not tumble dry

Measurement in inches

FAQs

Is this authentic Iron Heart?
Yes. All products sold by Rugged Gentlemen Shoppe are 100% authentic Iron Heart items sourced from Iron Heart Japan.

Why is this sold out elsewhere?
Iron Heart produces limited quantities and popular sizes sell out quickly on the official site and major retailers.

How fast do you ship?
Orders ship from our shop within 24–48 hours (business days).

Can you help with sizing?
Yes, contact us before ordering and we’ll provide real measurements for the exact pair in stock.