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Japan Blue J314-BLK Circle Series - Straight - 14oz Black x Black
Japan Blue J314-BLK Circle Series - Straight - 14oz Black x Black
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Japan Blue

J314-BLK Circle Series - Straight - 14oz Black x Black


Garment Measurements | Virtual Size Chart


The Japan Blue Circle Series J314 Straight 14 oz. Black x Black is a modern slim tapered fit with a medium-rise and a moderate seat and thigh that gracefully tapers through the leg to a narrow hem. This sanforized, proprietary 14 oz. Black Selvedge Denim is vintage shuttle loomed in Kojima, Japan, at moderate tension in-house using select 100% Cotton fibers. Washed for immediate comfort and drape, this denim has a black sulfur-dyed warp and weft over natural core yarns to develop crisp fading patterns in shades of charcoal to grey with repeated wears and washes. The Circle Series development is part of the Japan Blue agenda to innovate heritage goods through fits and fabrics to yield quality, modern selvedge jeans for a broad application of lifestyles and body types enabled by proprietary denim, a curved waistband, and clean detailing. Finished with elevated components and production standards, these jeans boast a black embossed leather patch, heavy-duty twill pocket bags, a black steel button waist and brass zipper fly, blackened rivets, tonal black inseam thread, bartack reinforcements throughout, and a chainstitched waist, seat, and hem. This Japan Blue Circle Series denim will serve the daily duties of the fashionista and heritage enthusiast with a contemporary, holistic quality.


  • Slim Tapered – Japan Blue 301 Straight Fit
  • Mid Rise, Moderate Seat and Thigh, Tapered Leg w/ Narrow Hem
  • 14 oz. Japanese Selvedge Denim
  • Proprietary Fabric
  • Sanforized - One Wash
  • White Selvedge Line
  • Black Sulfur Dyed Warp & Weft
  • 100% Cotton
  • Curved Waistband
  • Brass Zipper Fly w/ Black Steel Top Button
  • Heavy Twill Pocket Bags
  • 5th Pocket w/ Selvedge Line
  • Black Inseam Thread
  • Embossed Black Dyed Cowhide Patch
  • Blackened Rivets
  • Chainstitched Waistband, Seat, Inseam & Hem
  • Bartack Reinforced
  • Made in Japan


Model Measurements: 5'9" | 165 lbs. | 41" Chest | 34" Waist - Wearing Size 33

Japan Blue runs true to size, and we suggest going 0-1 size down from your Actual Waist Measurement (Body). Made with sanforized and once-washed denim, most shrinkage is removed. With regular use and after 1-2 washes, one can expect to gain .75-1" in the waist in 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 Japan Blue

Founded at the onset of the selvedge denim revival in 2010 out of the Collect Mills umbrella and sibling to Momotaro, Japan Blue represents evolution by staying true to tradition. This manufacturer in Kojima, Okayama, is entirely vertical. They create products in reverse, starting by identifying the goal and then having complete access to every stage of the process. This includes raw material sourcing, textile production, garment design, and construction. With this approach, they can achieve a more modern version... View All Japan Blue Products