Japan's First Domestic Jeans Manufacturer "BIG JOHN" and Authentic Silver Accessory Brand "FLUI" Announce First Collaboration

The pioneer of domestic jeans and an authentic silver accessory brand are collaborating for the first time. A special collection for denim enthusiasts to enjoy the beauty of aging.

FLUI, a men's silver accessory brand developed by CENTRAL FIELD Co., Ltd. (Headquarters: Okayama City, Okayama Prefecture, Representative Director: Kotaro Nakahara), will launch new collaborative products co-developed with BIG JOHN, the pioneer of domestic jeans. Pre-sales will begin on July 10, 2026 (Fri.) at the FLUI Kojima Jeans Street store, with general sales starting on July 15, 2026 (Wed.). These are special items filled with the dedication of both brands, with stores located in Kojima, the birthplace of jeans.

Development Background: A New Challenge Born from Okayama's Jeans Culture

Kojima, Kurashiki City, Okayama Prefecture, is known as the birthplace of domestic jeans. Both brands, based on "Kojima Jeans Street," which attracts many denim fans from Japan and abroad, have garnered support from numerous fashion enthusiasts both domestically and internationally.

FLUI, which has created unique accessories with the brand mission of "dialogue with the times, not swayed by them," and BIG JOHN, which launched Japan's first domestic jeans in 1965 and continues to pursue innovative denim. Both brands, continuing their manufacturing in Okayama, resonated with the desire to "convey new value from the jeans culture cultivated in Okayama," leading to this collaboration.

Silver accessories that showcase Japanese craftsmanship and high-quality denim. By combining the skills and sensibilities of professionals from different fields, they propose the value of "a lifetime item" loved across generations.

Features of the Collaboration Products

This collaboration features three series, with the concept of expressing BIG JOHN's history and jeans culture through silver accessories, all hand-finished by artisans in Okayama.

FLUI values "the concept that aging is beautiful." Rather than considering the new state as complete, the pieces develop texture and depth over time, becoming unique items for the owner. This is precisely the same philosophy as "denim," which allows one to enjoy fading and wear marks. With respect for the jeans culture passed down in Kojima, FLUI has expressed BIG JOHN's history and manufacturing spirit in a new form as silver accessories.

1. BIG JOHN Logo Series

This series reinterprets BIG JOHN's iconic logo as silver jewelry. The main feature is that the raised letters are individually sculpted by hand from wax prototypes by artisans, without relying on digital technologies such as CAD or 3D printers. This design, a fusion of American-born jeans culture and the silver craft techniques cultivated in Kojima, possesses a powerful presence that complements denim styles.

2. BIG JOHN ID Series

Inspired by the origins of domestic jeans, which were reportedly modeled after jeans sold off by the US military shortly after World War II, this series features motifs of dog tags and ID plates, which were military items of that era. The letters "BIG JOHN," "1940 KK (abbreviation for Kurashiki Kojima)," and "IT'S YOUR BRAND" are individually hammered onto the prototype by artisans using "chisel" tools, imbuing them with a unique, uneven strength that tells the story of jeans' roots and history.

3. BIG JOHN Vintage Button Series

This series is directly molded from precious vintage buttons (unused deadstock) that BIG JOHN used in the past. The pieces are intentionally not oxidized, utilizing a white finish that highlights the natural beauty of silver, expressing elegant, mature sophistication.

Product Overview (8 items in total)

Product Name / Price (excluding tax)

【BIG JOHN Logo Series】

BIG JOHN Box Ring: 39,000 yen

BIG JOHN Logo Pendant: 39,000 yen

BIG JOHN Logo Bracelet: 30,000 yen

【ID Series】

BIG JOHN ID Dog Tag: 27,000 yen

BIG JOHN ID Dog Tag Vintage Style (Kojima Store Exclusive): 31,000 yen

BIG JOHN ID Bracelet: 43,000 yen

BIG JOHN ID Ring: 18,000 yen

【Vintage Button Series】

BIG JOHN Vintage Button Pendant: 24,000 yen

BIG JOHN Vintage Button Signet Ring: 36,000 yen

Material: Sterling Silver 925

Release Date / Sales Locations

【Pre-sale】Starting 10:00 AM on July 10, 2026 (Fri.)

FLUI Kojima Jeans Street Store (1-11-14 Kojima Ajino, Kurashiki City, Okayama Prefecture)

【General Sale】Starting 10:00 AM on July 15, 2026 (Wed.)

FLUI Official Online Store (https://culturalflui.com/)

About FLUI ── Brand Concept

"Dialogue with the times, not swayed by them."

Silver accessories for adults who express themselves by quietly facing their own sensibilities and making choices based on their own will amidst changing times and values.

In response to the situation where men's silver accessories, which peaked in the 2000s, were considered outdated and eliminated, "FLUI" was launched in 2007 with the vision of redefining silver as an opportunity for redefinition, not decline.

We cherish the philosophy of "listening to the times while facing the essence, rather than resisting trends."

The brand name "FLUI" is derived from the Portuguese word "FLUIDO," meaning fluid, and proposes accessories for individuals who maintain their own axis amidst a constantly changing era of culture, sensibility, and values.

Within the seemingly inorganic material of metal (silver), it embodies the artisan's delicate handwork, subtle variations, and the beauty of composition with refined lines and planes, creating a timeless presence that conveys the essence of craftsmanship.

FLUI Official Media

Online store: https://www.culturalflui.com/

Instagram: https://www.instagram.com/flui_kojima/

LINE: @035xtgae

Company Overview

Company Name: CENTRAL FIELD Co., Ltd.

Established: April 2010

Representative: Representative Director Kotaro Nakahara

Location: 8-25 Kō-machi, Kita-ku, Okayama City, Okayama Prefecture, 700-0003

Inquiries Regarding This Release

CENTRAL FIELD Co., Ltd. Public Relations Department

MAIL: [email protected]