Skip to main content
Flat lay front view Iron Heart IH-666D 17oz brown duck slim straight jeans with rolled cuffs
Flat lay front view Iron Heart IH-666D 17oz brown duck slim straight jeans with rolled cuffs
Close-up of Iron Heart IH-666D brown duck jeans, back pocket and leather patch detail.
Close-up of Iron Heart IH-666D brown duck jeans, back pocket and leather patch detail.
Close-up front view of Iron Heart IH-666D 17oz brown duck slim straight jeans waistband, belt loops, button, and pocket stitching detail.
Close-up front view of Iron Heart IH-666D 17oz brown duck slim straight jeans waistband, belt loops, button, and pocket stitching detail.
Close-up of front left waist and pocket of Iron Heart IH-666D brown duck jeans, showing texture, stitching, and rivet details.
Close-up of front left waist and pocket of Iron Heart IH-666D brown duck jeans, showing texture, stitching, and rivet details.
Close-up of brown Iron Heart IH-666D 17oz duck jeans front leg, showcasing selvedge hem and fabric texture.
Close-up of brown Iron Heart IH-666D 17oz duck jeans front leg, showcasing selvedge hem and fabric texture.
Iron Heart IH-666D 17oz brown duck jeans, back view flat lay, showing rear pockets and leather patch
Iron Heart IH-666D 17oz brown duck jeans, back view flat lay, showing rear pockets and leather patch
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, full body of male model 5'9
Front view, full body of male model 5'9
Front full-body view of Iron Heart IH-666D brown duck jeans on male model, 5'9
Front full-body view of Iron Heart IH-666D brown duck jeans on 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
Male model 5'9
Male model 5'9
Front view full body of male model 5'9 165lbs wearing Iron Heart IH-666D brown duck jeans, athletic build
Front view full body of male model 5'9 165lbs wearing Iron Heart IH-666D brown duck jeans, athletic build
Close-up front view of Iron Heart IH-666D brown duck jeans, male model 5'9
Close-up front view of Iron Heart IH-666D brown duck jeans, male model 5'9
Close-up of men's Iron Heart IH-666D brown duck jeans side pocket, model 5'9
Close-up of men's Iron Heart IH-666D brown duck jeans side pocket, model 5'9
Close-up of back of Iron Heart 666D brown duck jeans on male model, tags visible, athletic build, 5'9
Close-up of back of Iron Heart 666D brown duck jeans on male model, tags visible, athletic build, 5'9
Close-up front view of Iron Heart IH-666D 17oz brown duck jeans on male model, 5'9
Close-up front view of Iron Heart IH-666D 17oz brown duck jeans on male model, 5'9
Close-up rear view of Iron Heart IH-666D 17oz duck jeans in brown on male model, showing back pocket, tag, and denim texture. Model is 5'9
Close-up rear view of Iron Heart IH-666D 17oz duck jeans in brown on male model, showing back pocket, tag, and denim texture. Model is 5'9
Close-up of Iron Heart IH-666D brown selvedge jeans hem, red ID detail, side view on male model.
Close-up of Iron Heart IH-666D brown selvedge jeans hem, red ID detail, side view on male model.
Flat lay front view Iron Heart IH-666D 17oz brown duck slim straight jeans with rolled cuffs
Close-up of Iron Heart IH-666D brown duck jeans, back pocket and leather patch detail.
Close-up front view of Iron Heart IH-666D 17oz brown duck slim straight jeans waistband, belt loops, button, and pocket stitching detail.
Close-up of front left waist and pocket of Iron Heart IH-666D brown duck jeans, showing texture, stitching, and rivet details.
Close-up of brown Iron Heart IH-666D 17oz duck jeans front leg, showcasing selvedge hem and fabric texture.
Iron Heart IH-666D 17oz brown duck jeans, back view flat lay, showing rear pockets and leather patch
Male model 5'9
Male model, 5'9
Male model 5'9
Front view, full body of male model 5'9
Front full-body view of Iron Heart IH-666D brown duck jeans on male model, 5'9
Male model 5'9
Male model 5'9
Male model 5'9
Male model 5'9
Front view full body of male model 5'9 165lbs wearing Iron Heart IH-666D brown duck jeans, athletic build
Close-up front view of Iron Heart IH-666D brown duck jeans, male model 5'9
Close-up of men's Iron Heart IH-666D brown duck jeans side pocket, model 5'9
Close-up of back of Iron Heart 666D brown duck jeans on male model, tags visible, athletic build, 5'9
Close-up front view of Iron Heart IH-666D 17oz brown duck jeans on male model, 5'9
Close-up rear view of Iron Heart IH-666D 17oz duck jeans in brown on male model, showing back pocket, tag, and denim texture. Model is 5'9
Close-up of Iron Heart IH-666D brown selvedge jeans hem, red ID detail, side view on male model.

IH-666D - 17oz Duck Slim Straight Cut Jeans - Brown

$ 340.00

The IH‑666D is Iron Heart’s first non-denim 5-pocket jean, rendered in a heavyweight 17 oz brown cotton duck canvas that’s tightly woven, tough, and unapologetically rugged. Unlike softer selvedge denim, this duck fabric breaks in slowly, developing chalky fades and polish over time. Designed with a low-to-mid rise and slim-straight leg, the 666 silhouette offers a classic fit with enough structure to hold shape through most activities. Details include a sturdy button fly, lined rear pockets, hidden rivets, reinforced pocket openings, and poly/cotton constructional stitching throughout. The canvas is sanforized and pre-washed, which means size stability with minimal stretching expected in the waist.

  • 100% cotton duck canvas
  • 17 oz heavyweight plain weave fabric
  • Slim-straight cut, low-mid rise
  • Sanforized and one-washed—minimal shrinkage
  • Button fly with branded waistband tack button
  • Lined rear pockets with hidden rivets
  • Reinforced front pocket openings with tape
  • Heavy-duty poly/cotton stitching (single and chain-stitched)
  • Belt loops sewn into the waistband
  • Made in Japan
Size Waist Front Rise Back Rise Thigh Knee Hem Inseam
28 27.5 9.8 14.7 10.7 7.9 7.4 36.5
29 28.8 10.0 14.8 10.8 8.0 7.5 36.5
30 29.5 10.2 14.9 11.2 8.4 8.0 36.5
31 29.8 10.3 15.2 11.4 8.5 8.1 36.5
32 31.1 10.6 15.6 12.0 8.7 8.2 36.5
33 32.3 11.4 15.7 12.1 8.8 8.3 36.8
34 33.6 11.5 16.0 12.5 8.9 8.4 37.0
35 34.2 11.6 16.1 12.8 9.1 8.5 37.0
36 35.0 11.9 16.3 12.7 9.4 8.8 37.0
38 37.0 12.0 16.7 13.4 9.7 9.2 37.0
40 40.2 12.1 16.9 14.4 10.1 9.7 37.0
42 41.1 12.3 17.0 15.0 10.6 10.1 37.0
44 43.0 12.4 17.1 15.2 10.7 10.2 37.0

A variance of +/-.5" is to be expected. 

Fit Notes: Shop owner Tommy is wearing a size 34 in these. That is pretty much his standard size from Iron Heart these days. These are especially stiff and hard to break in, so the more room, the better. The 666 has a bit of extra room in the leg, so it's easier than some of the trimmer kits. We highly recommend you size up in these. Tommy is 5'10", 162lbs with between a 33-34" true waist.

*The 666 fit from Iron Heart is a modern slim straight cut with a medium rise, trim top block, and a gentle taper from the knee down for a clean, streamlined silhouette.*