Founded in 2010 by the COLLECT mill in Kojima, Japan Blue Jeans draws on decades of experience producing high quality denim for global brands. As part of the Japan Blue Group—alongside Momotaro Jeans—they specialize in crafting Japanese selvedge jeans using premium raw denim. With a focus on authentic Japanese denim and modern fits, Japan Blue Jeans offers exceptional craftsmanship at an accessible price. Their commitment to quality, innovation, and tradition has made them a standout in the world of Japanese-made denim.
JAPAN BLUE JEANS
Japan Blue Jeans (J414) 14oz. Black Classic Straight
JAPAN BLUE JEANS uses a "curved belt (curved waistband)" instead of straight belt, which is the mainstream for men's jeans, to pursue a better fit and comfort around the waist.
While the jeans is truly authentic without compromise as committing to "Made in Japan" in all processes of jeans from fabric to product, they are comfortable and can be worn with all kinds of lifestyles.
Fit: STRAIGHT
Regular fit - Straight leg (slightly tapered) - Mid rise
Fabric: 14oz black selvedge denim (sulfur dye)
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Japan Blue Jeans J401(D01) 14.8oz Classic Straight Selvedge Jeans-Aging Wash
Design & Functionality
JAPAN BLUE JEANS takes pride in its craftsmanship, born in Kojima, the denim capital. Each pair is made in Japan, ensuring top-tier quality from fabric to finish. The curved waistband provides a comfortable, snug fit around the waist, offering enhanced comfort compared to traditional straight belts.
CLASSIC STRAIGHT
A plain silhouette with a classic straight-leg fit. The design is straight from the thigh to the hem for a clean look. This timeless design ensures that the jeans will be loved for years to come.
14.8oz Hard Denim Selvedge
One of JAPAN BLUE JEANS' flagship fabrics, first used at the brand’s inception. The yarn is spun more tightly to increase strength, creating a fabric with pronounced irregularities. The extreme thread count helps the fabric maintain its durability, creating a "denim that ages" beautifully. It has a dry texture and a vintage-like appearance.
Aging Wash
The denim features a pronounced contrast with well-crafted whiskers and fades, preserving the hard feel of the fabric. A special dyeing process adds depth to the fabric, creating a vintage look that would not be achievable with traditional processing alone. Despite complex processing, the denim retains its firmness, allowing for further fading over time.
- Rigid Fabric
- Mid-rise
- Zipper Fly
- Red Selvedge
- Plain Pocket
- Cowhide Patch
- Blue Inseam
- Chain Stitch
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Japan Blue Jeans (JBAG1542) 13oz Denim Wide Tapered
Design & Silhouette
Featuring front pleats and a voluminous tapered silhouette, these pants offer a relaxed fit. With a generous rise and room around the hips, the legs gradually taper toward the hem, creating a sleek and refined appearance. Despite their overall relaxed structure, the pants maintain a polished look.
Fabric
Made from 13oz natural denim with a distinctive slub texture, this fabric offers a dry touch and is suitable for year-round use. The unique uneven texture enhances with wear, providing a rich aging experience over time. Stone bio-washing gives the fabric a soft feel and vintage character, with subtle fading throughout.
Points
Fabric Thickness: Standard / No stretch
Silhouette: Wide / Slightly high rise / Full length
Front Closure: Zipper
Back Pocket: No stitching or embroidery
Leather Patch: Natural cowhide
Hem Finish: Single stitch
Processing: One-wash
100% Cotton
Made in Japan
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This product has multiple variants. The options may be chosen on the product page
Japan Blue Jeans (J501) 14.8oz US Cotton Loose Selvedge Jeans-Aging Wash
JAPAN BLUE JEANS uses a "curved belt (curved waistband)" instead of straight belt, which is the mainstream for men's jeans, to pursue a better fit and comfort around the waist.
While the jeans is truly authentic without compromise as committing to "Made in Japan" in all processes of jeans from fabric to product, they are comfortable and can be worn with all kinds of lifestyles.
Fit: LOOSE
Loose fit - Straight leg - High rise
Fabric: 14.8oz US cotton selvedge denim
100% Cotton
Made in Japan
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This product has multiple variants. The options may be chosen on the product page
Japan Blue Jeans (J501) 14.8oz US Cotton Loose Selvedge Jeans
JAPAN BLUE JEANS uses a "curved belt (curved waistband)" instead of straight belt, which is the mainstream for men's jeans, to pursue a better fit and comfort around the waist.
While the jeans is truly authentic without compromise as committing to "Made in Japan" in all processes of jeans from fabric to product, they are comfortable and can be worn with all kinds of lifestyles.
Fit: LOOSE
Loose fit - Straight leg - High rise
Fabric: 14.8oz US cotton selvedge denim
100% Cotton
Made in Japan
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This product has multiple variants. The options may be chosen on the product page
Japan Blue Jeans (J514) 14oz. Black Selvedge Loose Jeans
JAPAN BLUE JEANS uses a "curved belt (curved waistband)" instead of straight belt, which is the mainstream for men's jeans, to pursue a better fit and comfort around the waist.
While the jeans is truly authentic without compromise as committing to "Made in Japan" in all processes of jeans from fabric to product, they are comfortable and can be worn with all kinds of lifestyles.
Fit: LOOSE
Loose fit - Straight leg - High rise
Fabric: 14oz. black selvedge denim (sulfur dye)
100% Cotton
Made in Japan
Select options
This product has multiple variants. The options may be chosen on the product page
Japan Blue Jeans (J314) 14oz. Black Selvedge Straight Jeans
JAPAN BLUE JEANS uses a "curved belt (curved waistband)" instead of straight belt, which is the mainstream for men's jeans, to pursue a better fit and comfort around the waist.
While the jeans is truly authentic without compromise as committing to "Made in Japan" in all processes of jeans from fabric to product, they are comfortable and can be worn with all kinds of lifestyles.
Fit: STRAIGHT
Regular fit - Straight leg (slightly tapered) - Mid rise
Fabric: 14oz. black selvedge denim (sulfur dye)
100% Cotton
Made in Japan
Select options
This product has multiple variants. The options may be chosen on the product page
Japan Blue Jeans (J401) 14.8oz Classic Straight Selvedge Jeans-Mid Wash
CLASSIC STRAIGHT
Classic straight model is a wide shape from thighs to knees with a high rise.
A slightly tapered to the hems and gives look smartly even the overall design is a relaxed.
14.8oz US cotton selvedge denim
Signature fabric to JBJ since its establishment.
To create a "fabric for jeans" that retains its firmness even after wearing for years, we put the thread-counts to the limit into it.
Details
・Zipper fly
・Selvedge: red
・JBJ original donut button
・Leather patch
・Inseam: JBJ blue thread
・Chain stitched bottom hems
・Aging washed
・Length: 32 inch
・100％ cotton
Made in Japan
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This product has multiple variants. The options may be chosen on the product page
Japan Blue Jeans (J401) 14.8oz Classic Straight US Cotton Vintage Selvedge Jeans
JAPAN BLUE JEANS's CIRCLE line is the new dimensional fit jeans. CIRCLE line is equally well received by Japanese and overseas consumers.
Curve waist line is the origin of the name CIRCLE. The waist pattern that once used to be straight, has been renewed. Curve waist belt has been improvised to pursue a perfect fit around the waist. Classic Regular Straight. 14.8oz Selvedge Denim. *Inseam is 32". 100％ Cotton. Made in Japan
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This product has multiple variants. The options may be chosen on the product page
Japan Blue Jeans (J301) 14.8oz Straight US Cotton Vintage Selvedge Jeans
JAPAN BLUE JEANS's CIRCLE line is the new dimensional fit jeans. CIRCLE line is equally well received by Japanese and overseas consumers.
Curve waist line is the origin of the name CIRCLE. The waist pattern that once used to be straight, has been renewed. Curve waist belt has been improvised to pursue a perfect fit around the waist. Slim Straight Fit. 14.8oz Selvedge Denim. 100% Cotton. Made in Japan
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This product has multiple variants. The options may be chosen on the product page
Japan Blue Jeans (J201) 14.8oz Tapered US Cotton Vintage Selvedge Jeans
JAPAN BLUE JEANS's CIRCLE line is the new dimensional fit jeans. CIRCLE line is equally well received by Japanese and overseas consumers.
Curve waist line is the origin of the name CIRCLE. The waist pattern that once used to be straight, has been renewed. Curve waist belt has been improvised to pursue a perfect fit around the waist. 14.8oz American Cotton Vintage Selvage. The cotton use is from the United States Texas to make a rough and rugged texture. By spinning this American cotton slightly stronger, the strength is further increased. The shape of the unevenness is also slightly intensified. *Inseam is 32" 100% Cotton. Made in Japan
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This product has multiple variants. The options may be chosen on the product page