This is the Zero + War model. The fabric is the new original denim "17oz Zero + Selvedge denim".
The silhouette is based on the Zero fighter model S3000VX, but is a new model with more room in the rise and thighs.
The S3100VX has unique specifications such as copper-colored iron pine wood buttons, a bag fabric made from 8oz uneven-yarn denim, and a leather patch with an illustration of two people shaking hands.
It has a simple design without name or paint stitching.
Spec
17oz Zero+Selvedge denim
Irregular thread denim bag fabric
Iron and copper pine tree button
Copper SAMURAI CO rivets
Brass SAMURAI CO hidden rivets
Special leather patch and flasher
First edition with serial number
Slightly thick straight
One Wash
made in Japan
The above is reprinted from SAMURAI HP
The new fabric, 17oz Zero + selvedge denim, is rough and thick, just like the popular standard fabric "17oz Zero fabric", and is a samurai-like fabric that is comfortable to wear.
The color fades unevenly in spots, allowing you to enjoy the unique color fading of Samurai Jeans that you won't find in vintage jeans.
They have a high rise and are slightly thick and straight.
