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Front flat lay of Iron Heart IH-634S-B 21oz selvedge denim jeans, indigo overdyed black, showcasing straight cut and folded cuffs.
Front flat lay of Iron Heart IH-634S-B 21oz selvedge denim jeans, indigo overdyed black, showcasing straight cut and folded cuffs.
Close-up of back side of Iron Heart IH-634S-B 21oz selvedge denim jeans, showing leather waist patch and original paper tag in pocket, showcasing heavy indigo overdyed black denim fabric. Dant contemporary casual apparel.
Close-up of back side of Iron Heart IH-634S-B 21oz selvedge denim jeans, showing leather waist patch and original paper tag in pocket, showcasing heavy indigo overdyed black denim fabric. Dant contemporary casual apparel.
Close-up of front waist and fly of Iron Heart IH-634S-B 21oz selvedge denim jeans, indigo overdyed black, showing button, rivets, belt loops, and pocket stitching.
Close-up of front waist and fly of Iron Heart IH-634S-B 21oz selvedge denim jeans, indigo overdyed black, showing button, rivets, belt loops, and pocket stitching.
Close-up of Iron Heart IH-634S-B selvedge denim jeans front pocket, indigo overdyed black, highlighting copper rivets and stitching.
Close-up of Iron Heart IH-634S-B selvedge denim jeans front pocket, indigo overdyed black, highlighting copper rivets and stitching.
Close-up of Iron Heart IH-634S-B selvedge denim, front left leg cuff, indigo overdyed black.
Close-up of Iron Heart IH-634S-B selvedge denim, front left leg cuff, indigo overdyed black.
Flat lay of Iron Heart IH-634S-B 21oz selvedge denim jeans, back view, showing rear pockets and tags.
Flat lay of Iron Heart IH-634S-B 21oz selvedge denim jeans, back view, showing rear pockets and tags.
Male model 5'9
Male model 5'9
Full body rear view of male model, 5'9
Full body rear view of male model, 5'9
Male model 5'9
Male model 5'9
Front view, full body of male model 5'9 165lbs in Iron Heart IH-634S-B 21oz black selvedge straight jeans.
Front view, full body of male model 5'9 165lbs in Iron Heart IH-634S-B 21oz black selvedge straight jeans.
Male model 5'9
Male model 5'9
Side view of male model 5'9
Side view of male model 5'9
Male model 5'9
Male model 5'9
Male model 5'9
Male model 5'9
Male model, 5'9
Male model, 5'9
Front view, mid-length, male model 5'9
Front view, mid-length, male model 5'9
Close-up front of Iron Heart IH-634S-B 21oz selvedge denim jeans on male model, athletic build, indigo overdyed black.
Close-up front of Iron Heart IH-634S-B 21oz selvedge denim jeans on male model, athletic build, indigo overdyed black.
Close-up of Iron Heart IH-634S-B 21oz selvedge denim jeans side, on male model 5'9
Close-up of Iron Heart IH-634S-B 21oz selvedge denim jeans side, on male model 5'9
Close-up rear view of Iron Heart IH-634S-B 21oz selvedge jeans, indigo overdyed black, on 5'9
Close-up rear view of Iron Heart IH-634S-B 21oz selvedge jeans, indigo overdyed black, on 5'9
Close-up of male model wearing Iron Heart IH-634S-B selvedge denim jeans, cuffed hem, side view.
Close-up of male model wearing Iron Heart IH-634S-B selvedge denim jeans, cuffed hem, side view.
Front flat lay of Iron Heart IH-634S-B 21oz selvedge denim jeans, indigo overdyed black, showcasing straight cut and folded cuffs.
Close-up of back side of Iron Heart IH-634S-B 21oz selvedge denim jeans, showing leather waist patch and original paper tag in pocket, showcasing heavy indigo overdyed black denim fabric. Dant contemporary casual apparel.
Close-up of front waist and fly of Iron Heart IH-634S-B 21oz selvedge denim jeans, indigo overdyed black, showing button, rivets, belt loops, and pocket stitching.
Close-up of Iron Heart IH-634S-B selvedge denim jeans front pocket, indigo overdyed black, highlighting copper rivets and stitching.
Close-up of Iron Heart IH-634S-B selvedge denim, front left leg cuff, indigo overdyed black.
Flat lay of Iron Heart IH-634S-B 21oz selvedge denim jeans, back view, showing rear pockets and tags.
Male model 5'9
Full body rear view of male model, 5'9
Male model 5'9
Front view, full body of male model 5'9 165lbs in Iron Heart IH-634S-B 21oz black selvedge straight jeans.
Male model 5'9
Side view of male model 5'9
Male model 5'9
Male model 5'9
Male model, 5'9
Front view, mid-length, male model 5'9
Close-up front of Iron Heart IH-634S-B 21oz selvedge denim jeans on male model, athletic build, indigo overdyed black.
Close-up of Iron Heart IH-634S-B 21oz selvedge denim jeans side, on male model 5'9
Close-up rear view of Iron Heart IH-634S-B 21oz selvedge jeans, indigo overdyed black, on 5'9
Close-up of male model wearing Iron Heart IH-634S-B selvedge denim jeans, cuffed hem, side view.

IH-634S-B - 21oz Selvedge Denim Straight Cut Jeans - Indigo Overdyed Black

$ 415.00

These medium-rise, straight-cut jeans are built from 21oz overdyed indigo selvedge denim and bring a bold edge to a timeless classic. The process? Pure transformation. Starting with the iconic IH-634S Indigo jeans, they’re steeped in black dye using a direct dyeing method that saturates the indigo fabric and stitching while erasing all shrinkage. The result is a perfect hybrid—dark and striking, but with the promise of blue-tinged fades that’ll break in beautifully with wear. These had an almost seude like quality to them, reading a bit like moleskin when you have them on. It's a welcomed softening the overdue process brings that knocks down some of the flatness of the denim and turns it more to a matte. 

In the past, sulfur dye was the go-to for overdyeing, but they've shifted to a more eco-friendly direct dyeing process. The only real difference? The brass hardware stays shiny instead of oxidized. Otherwise, you can count on these jeans to age just as beautifully as their predecessors, with a fade journey that's all their own.

  • Made in Japan
  • Classic straight cut
  • Medium rise
  • 21oz rope dyed indigo warp, natural weft Japanese selvedge denim
  • After construction, garment overdyed with black sulphur dye
  • Fades slowly with an even contrast, the high wear areas will show a pale blue tone
  • Woven with a double twisted weft yarn
  • Button fly and hidden rivets
  • Unlined rear pockets
  • Belt loops sewn into waistband
  • Poly/cotton constructional stitching
  • Overdyed, which takes out all potential shrinkage
  • The waist will stretch out approximately one inch with wear
  • Other dimensions will stretch proportionately to the waist
Tag Size Waist Front Rise Rear Rise Thigh Knee Hem Inseam
28 29.0 10.0 14.3 11.4 8.3 7.9 35.0
29 29.4 10.2 14.5 11.6 8.5 8.0 35.0
30 30.3 10.4 14.7 12.0 8.7 8.3 35.0
31 31.5 10.5 15.0 12.4 9.0 8.5 35.0
32 32 10.5 14.25 12.25 9.0 8.75 35.0
33 33.5 11.0 15.5 13.0 9.4 8.9 35.0
34 34.6 11.1 15.6 13.2 9.6 9.1 35.0
35 35.8 11.5 15.9 13.6 9.7 9.4 35.0
36 35.75 11.6 16.1 13.9 10.0 9.5 35.0
38 38.0 12.1 16.4 14.4 10.3 9.9 35.5
40 40.0 12.2 16.7 15.0 10.6 10.1 35.5
42 42.0 12.5 17.0 15.1 10.7 10.3 36.0
44 44.1 12.7 17.1 15.3 10.9 10.5 36.0

A variance of +/-.5" is within tolerance. 

Fit Notes: Tommy has been wearing a 33 across the board from Iron Heart, but decided to go up to a 34 in these. With wearing roomier cuts, he figured it couldn't hurt to give it a try and ultimately really loved the fit.  The 634 is a cut we used to consider wide, but now only becomes more of a relaxed straight if you size up. We always recommend sizing up at least once in Iron Heart. Tommy is 5'10," 165lbs with a 33-34" waist.