Shopping Bag
Iron Heart 555-03 - Super Slim - 21oz SBG Black x Black
Iron Heart 555-03 - Super Slim - 21oz SBG Black x Black
Leg Opening

Iron Heart

555-03 - Super Slim - 21oz SBG Black x Black


Garment Measurements | Virtual Size Chart


The Iron Heart 555-03 is a deadly high rise Super Slim Fit with a roomy seat, moderate thigh, slim leg, and narrow hem. This jean features heavy weight 21 oz. sanforized right hand twill Japanese Selvedge denim, woven with lower tension to allow this super-black sulphur dyed fabric greater wearability and softness once broken in. Produced on a vintage shuttle loom in Kojima, Japan, this is a fade-to-gray denim with a specialty black sulphur dyed warp and a non-fade black reactive dyed weft that will yield a beautiful patina after enough road trips and concerts. Finally, it's topped off with an ultra heavy natural vegetable tanned embossed leather patch, heavy duty canvas twill pocket bags, embossed copper riveting on the front pockets, hidden rivets on the back, a button fly with interior selvedge detailing, and a chainstitched waist, seat, and hem. The end result is a project piece with an edge to it, perfect for the gentleman who likes to send a message without saying a word. Built for the biker community and over-engineered to start, the piece tests the limits of what actually can be artfully woven and sewn. For a pair of jeans that read “back off,” try the 555-03 in 21 oz. Black x Black to set the tone of your look to a deeper shade of dark.


  • Super Slim - 555 Fit 
  • High Rise, Slim
  • Roomy Seat and Moderate Thigh, Slim Leg w/ Narrow Hem
  • 21oz. Japanese Super Black Fade-to-Grey Selvedge Denim
  • Sanforized - Raw Unwashed
  • Red Selvedge Line
  • Black Sulfur Dyed Warp/Black Reactive Dyed Weft
  • 100% Cotton
  • Zinc Button Fly w/ Selvedge Detail
  • Engraved Copper and Hidden Rivets
  • Heavy Duty Canvas Twill Pocket Bags
  • Fully Lined Back Pockets
  • Embossed Natural Leather Patch
  • Chainstitched Waistband, Yoke, Seat & Hem
  • Bartack Reinforced
  • Stitched & Tucked Belt Loops
  • Made in Japan


Model Measurements: 5'11" | 165 lbs. | 40" Chest | 32.5" Waist - Wearing Size 31

Iron Heart 555-03 Denim runs slightly large, and we suggest sizing down roughly 1-2 sizes from your actual waist size. This denim is sanforized but unwashed and will stretch 1-2" in the waist with one month of regular use, and upon first wash will shrink roughly 1" in the waist and 2" in length.

We recommend consulting our Sizing Guide and using our Virtual Size Chart.

Please feel free to Contact Us for additional assistance.

About Iron Heart

After 20 years of working in the garment industry in Japan, Shinichi Haraki established Works Inc a.k.a. Iron Heart in 2003 as a heavyweight Japanese clothing brand, initially aimed at the Japanese motorcycling community. Over the years and in partnership with the UK heritage community, the brand has become the pinnacle definition of bullet-proof garment construction. Originally made for bikers, Iron Heart pushes the design and construction of the clothing to the limit of what can actually be woven and... View All Iron Heart Products