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Iron Heart Devil’s Fit 21 Oz. Superblack Denim (IH-666SB)

As the Devil’s Fit is one of the most demanded styles from the team over at Iron Heart, it should come as no surprise that they received numerous requests to produce the denim in black and responded with an amazing jean.

The Iron Heart’s 666SB boasts a 21 oz. superblack denim that is constructed with reactive dyed warp and weft, meaning that the dye has a substituent which is made active and directly reacts to the surface of the thread. This creates a unique combination that actually prevents the fading process from occurring. Or in other words, your superblack jeans will look ever-crisp and retain its colour with time.

IH-666 Line

For those concerned about what to expect in terms of shrink and stretch, the 666SB is already sanforized – thus, one can expect minimal shrinkage, between 1% – 5% – but should still plan for net 1″ stretch. On the aesthetic and construction side too, you’ll notice Iron Heart opted for a red overlock stitch on their side seams rather than a more common red-line selvedge finish.

Besides these details, the Devil’s Fit is usually outfitted with a button fly, there’s reinforced taping alongside the front pocket openings, and the belt loops are sewn into the waist band. They does offer different lengths for this fit, so for those interested, be sure to check out their measurements.

IH-666 Fits


  • Name: Iron Heart 21 Oz. Superblack Slim cut Jeans (The Devil’s Fit)
  • Weight: 21 Oz.
  • Fit: Slim Cut
  • Denim: Iron Heart’s Superblack Denim with Reactive Dyed Warp and Weft
  • Other Details:
    • Sanforized
    • Button Fly
    • Reinforcing tape on inside of front pocket openings
    • Red overlock stitching
    • Polycotton constructional stitching
  • Available at: Iron Heart for $370.00 USD


IH-666 Patch

IH-666 Interior

IH-666 Back Patch

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