Pure Blue Japan KS-013 Irregular Indigo (Rainfall)

February 14, 2017

Pure Blue Japan KS-013  Irregular Indigo (Rainfall)

This is the latest version of the 013 fit, this time using their new exclusive Irregular Indigo denim fabric!
The Irregular Indigo fabric is quite different to the classic 013 14.5oz version, it is not as slubby and weighs in slightly heaver at 16.05z. If you look closely at the vertical threads you can see the variation of the indigo dye colour! This means the ageing affect will be vertically stronger and have a beautiful indigo rainfall effect. This kind of appearance was only possible by using natural dyed denim but PBJ has brought this fabric to life using indigo dyed denim.
Most of the time naturally dyed denim ages quite slowly and has little contrast, but this Irregular Indigo fabric is quite different! It is indigo dyed and will age quicker and with much more contrast, this is some real Pure Blue Japan indigo dye magic!!
The 013 fit is one of our most popular slim tapered fits! Why not give the 'PBJ Rainfall Magic’ a try, we guarantee you will be amazed by the ageing!

Click here to buy. 

How We Measure

Pants and Shorts


With the major buttoned up (i.e. the top button) open the jeans and lay them flat, like shown. Measure from the front where the major button closes to the back belt loop. Double this measurement to find the waist measurement.

The way we measure the waist is different from the 'Side to Side' technique. If you are used to the 'side to side' technique you can roughly roughly downsize by 1 inch.

For example, 'side to side' measurement for The Flat Head 3002 waist is 28inch and using our method measures at 29.25inch.

Front Rise:

With the jeans lying flat measure from the crotch bar tack to the top of the waistband. 

Back Rise:

Spread out the crotch so the bar tack is visible, then measure from the crotch to the top of the waistband.


One inch down from the crotch, measure flat across to the other side.


Flatten the leg and measure along the inseam from the crotch to the leg hem. 

Leg Openning:

Measure straight across the hem from side to side.





Lay flat then measure from the shoulder's edge to the other shoulder's edge.


Lay shirt flat and measure from pit to pit.

Sleeve length:

With the sleeve flat measure from the shoulder to the cuff.

Arm hole openning:

Measure from the shoulder down to the pitt.

Vertical length:

With the shirt facing down, Measure from below the collar to the bottom hem.