Iron Heart's 634 cut is their flagship straight leg model based on a 1966 Levi's 501 with a mid rise and gentle taper from the knee down. This version is offered in their iconic 21oz denim; heavy yet soft, which has then been given a black sulphur overdye treatment. This process removes all the shrinkage from the fabric and will result in high contrast dark indigo fades with time.

• Made in Japan
• Classic straight cut
• Medium rise
• 21oz rope dyed indigo warp, natural weft Japanese selvedge denim
• After construction, the garment is overdyed with black dye
• Fades slowly with an even contrast, the high wear areas will show a pale blue tone
• Woven with a double twisted weft yarn
• Button fly and hidden rivets
• Unlined rear pockets
• Belt loops sewn into waistband
• Poly/cotton constructional stitching
• Overdyed, which takes out all potential shrinkage
• The waist will stretch out approximately one inch with wear
• Other dimensions will stretch proportionately to the waist