The Japan Blue J314 Circle Straight Black Jeans represent a modern evolution of classic black selvedge denim, combining refined fit engineering with the brand’s deep-rooted expertise in traditional Japanese denim production. Crafted in Kojima, Japan, these jeans are part of Japan Blue’s innovative Circle Jeans series, developed to deliver superior comfort without compromising structure or durability.

The fabric is a newly developed 14oz Japanese selvedge denim, woven from 100% American cotton using strong, resilient yarns chosen for long-term wear. Both the warp and weft are sulfur-dyed black, creating a deep, uniform tone with subtle depth rather than a flat, lifeless black. Woven on vintage shuttle looms at higher tension, the denim has a robust, compact feel that maintains a clean surface while still aging with character over time.

Japan Blue’s Circle waistband is the defining feature of this series. Designed with a subtle curve, it naturally follows the shape of the waist, reducing gaping at the back and improving overall comfort—especially during extended wear. The result is a jean that feels noticeably more ergonomic while maintaining a sharp, traditional appearance.

The J314 cut is a regular straight fit with a mid rise, offering a timeless silhouette that works effortlessly with boots, sneakers, or dress shoes. It provides balanced room through the thigh with a straight leg that remains clean and versatile. The fabric is sanforized and one-washed, ensuring immediate comfort with no shrinkage to worry about.

Finishing details reflect Japan Blue’s understated but precise approach: a black vegetable-tanned leather patch, a custom engraved doughnut top button, a gold metal zip fly, reinforced bar tacks, and durable pocket bags made from thick cotton cloth. A peek-a-boo selvedge coin pocket and red selvedge ID complete the package, grounding the jeans firmly in heritage denim tradition.

Fit Notes: These jeans have a standard sizing. We recommend choosing your usual size. However, as always, we recommend checking the size chart first to find your perfect size. The fabric is sanforized, so there will be no shrinkage. The waist will experience the typical stretching seen in sanforized denim. Expect approximately 0.5 to 1 inch of stretching.

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• 14oz Japanese selvedge denim, sanforized and one-washed. No shrinkage expected
• 100% American cotton for strength and durability
• Warp and weft sulfur-dyed black for rich, deep color
• Woven on vintage shuttle looms in Kojima, Japan
• Part of the Japan Blue Circle Jeans series
• Curved Circle waistband for improved comfort and fit
• Mid rise with a regular straight silhouette
• Heavy-duty bar tacks for reinforcement
• Custom engraved doughnut top button
• Gold metal zip fly
• Copper male rivets
• Peek-a-boo selvedge coin pocket
• Durable cotton-lined front pocket bags
• Black vegetable-tanned cowhide leather patch
• Red selvedge ID
• Made in Kojima, Japan

Spain

FREE SHIPPING on orders over 100 EUR .

6 EUR shipping cost on orders under the value mentioned above.

European Union & The UK

FREE SHIPPING on orders over 150 EUR \\.

14 EUR shipping cost on orders under the value mentioned above.

Rest of the World

FREE SHIPPING on orders over 250 EUR .

25 EUR shipping cost on orders under the value mentioned above.

If for some reason you are not happy with your purchase you can return it to us within 14 days for a size exchange or refund.

For more info please visit our returns & exchange page.

Please note that items in the SALE category are considered FINAL SALE, with no returns or exchanges accepted.