XX604 (001)『XXXX-EXTRA』EXTRA DENIM COVERALL

BIG JOHN XXXX-EXTRA Coverall Jacket

● A culmination of Japanese craftsmanship.
● Pure indigo denim, rope-dyed with natural indigo.
● Authentic 3-pocket coverall style.
● 12.0oz denim with a smooth, refined handfeel.

Part of the XXXX-EXTRA series—BIG JOHN’s pinnacle denim project—the long-awaited coverall jacket is born from one clear ambition: to create a work jacket that represents the very best of Japanese craftsmanship.

Featuring a minimalist 3-pocket design, this jacket exudes the character of traditional workwear. Its silhouette and fit have been carefully tuned for modern comfort and versatility, while the deep hue of pure natural indigo lends timeless depth and elegance.

The fabric is a technical and aesthetic masterpiece: a 12.0oz selvedge denim woven from a proprietary slub yarn by Taisho Spinning, using a blend of five organic cottons sourced from five continents. Rope-dyed 16 times with 100% natural indigo by Sakamoto Denim, the result is a luxurious, richly textured blue that evolves beautifully over time. The denim is woven slowly on vintage shuttle looms, resulting in a soft, uneven texture and signature indigo selvedge.

Every element—from the iron buttons to the natural leather patch—is developed exclusively for the EXTRA line. No detail is overlooked in this modern classic that embodies BIG JOHN’s philosophy and spirit.

Wear craftsmanship. Daily. Experience the true value of Japanese denim through this exceptional piece.