Iron Heart 634S 21oz Ultra Heavy Raw Selvedge Jeans - Classic Straight / IH-634S-UHR
Some jeans are made to be worn. Others are made to be earned. The IH-634S-UHR belongs firmly in the second category. Built from Iron Heart’s legendary 21oz Ultra Heavy Raw (UHR) denim, this loomstate fabric reaches roughly 23oz after shrinkage, delivering the kind of density, texture, and long-term character that made the UHR name iconic among serious denim collectors. The classic 634 straight cut, inspired by vintage 1966 501 jeans, offers a mid rise, clean top block, and a subtle taper with pure cotton with an indigo rope-dyed warp, white weft, and double-twisted weft yarns, the fabric starts rigid and uncompromising, then slowly breaks into a deeply personal fit. Every crease, fade, and contrast mark is earned through wear. This is raw denim in its purest form.
Finished with hidden rivets, lined rear pockets, button fly, chain stitch construction, heavyweight pocket bags, and a vegetable-tanned leather patch. Not for everyone and exactly because of that.
- Iron Heart 21/23oz Ultra Heavy Raw Selvedge Denim Jeans
- IH-634S-UHR
- Indigo
- Mid Rise / Classic Straight
- 100% Cotton
- 21oz Unsanforized Loomstate Selvedge Denim
- Indigo Rope-Dyed Warp / White Weft
- Double Twisted Weft Yarn
- Lined Rear Pockets
- Button Fly
- Hidden Rivets
- Poly/Cotton Yarn Construction
- Vegetable-Tanned Leather Patch
- Unsanforized & Unwashed: Shrinkage up to 4cm (inseam) & up to 1cm (waist)
- Made In Japan
Not sure about your size?
Find our measurement chart below (Fitting Guide) and see how we measure.
Still not sure? Give us a call on 089/242 92 351 or write us an email at [email protected]















Description
Some jeans are made to be worn. Others are made to be earned. The IH-634S-UHR belongs firmly in the second category. Built from Iron Heart’s legendary 21oz Ultra Heavy Raw (UHR) denim, this loomstate fabric reaches roughly 23oz after shrinkage, delivering the kind of density, texture, and long-term character that made the UHR name iconic among serious denim collectors. The classic 634 straight cut, inspired by vintage 1966 501 jeans, offers a mid rise, clean top block, and a subtle taper with pure cotton with an indigo rope-dyed warp, white weft, and double-twisted weft yarns, the fabric starts rigid and uncompromising, then slowly breaks into a deeply personal fit. Every crease, fade, and contrast mark is earned through wear. This is raw denim in its purest form.
Finished with hidden rivets, lined rear pockets, button fly, chain stitch construction, heavyweight pocket bags, and a vegetable-tanned leather patch. Not for everyone and exactly because of that.
- Iron Heart 21/23oz Ultra Heavy Raw Selvedge Denim Jeans
- IH-634S-UHR
- Indigo
- Mid Rise / Classic Straight
- 100% Cotton
- 21oz Unsanforized Loomstate Selvedge Denim
- Indigo Rope-Dyed Warp / White Weft
- Double Twisted Weft Yarn
- Lined Rear Pockets
- Button Fly
- Hidden Rivets
- Poly/Cotton Yarn Construction
- Vegetable-Tanned Leather Patch
- Unsanforized & Unwashed: Shrinkage up to 4cm (inseam) & up to 1cm (waist)
- Made In Japan
Not sure about your size?
Find our measurement chart below (Fitting Guide) and see how we measure.
Still not sure? Give us a call on 089/242 92 351 or write us an email at [email protected]
























