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Iron Heart 555S-SBG - Super Slim - 21oz Superblack Fade To Grey
Iron Heart 555S-SBG - Super Slim - 21oz Superblack Fade To Grey
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Iron Heart

555S-SBG - Super Slim - 21oz Superblack Fade To Grey


Garment Measurements | Virtual Size Chart


The Iron Heart IH-555S-SBG is a mid-high rise Super Slim Fit with a roomy seat, moderate thigh, slim leg, and narrow hem. This jean features a signature 21 oz. heavyweight, sanforized and once-washed right hand twill Japanese Selvedge Denim, woven on a vintage shuttle loom in Kojima, Japan. This material is made with two twisted yarns to add bulk in a low tension weave that will become amazingly soft with a natural drape while retaining its form. A hallmark fabric within the Iron Heart collection, this 100% cotton denim utilizes the dual yarn method to produce a slight slub on the inside weft that softens to the body and gives this remarkable heavy weight denim an unmatched wearability once broken in. 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 555S-SBG in 21 oz. Superblack Fade To Grey 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
  • 21 oz. Japanese Superblack Fade-to-Grey (SBG) Selvedge Denim
  • Sanforized - One Washed
  • Red Selvedge Line
  • Double Twisted Weft Yarn
  • 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 33

The 555S-SBG runs true to Iron Heart sizing, and we suggest going down 0-1 sizes from your Actual Waist Measurement. Made with a sanforized and once washed denim, most shrinkage is removed. With regular use, one can expect up to 1” of stretch in the waist over the long term.

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