May 30, 2018


“Katsuragi” ultra heavy cotton twill is a kind of traditional Japanese cotton twill used for high-end  mechanic suit then Momotaro makes its own “Katsuragi” ultra heavy cotton twill for this beautiful workshirt with its magic!

This is an all-season workshirt, you can wear it as a heavyweight workshirt underneath the jacket in cold season or a lightweight jacket in warm season.The color is indigo sulphur dyed so throughout time, it will age to a more vintage look with wears & washes!

If you are looking for a classic ultra heavy workshirt with a friendly price, this is the one we recommend!

Click here to buy

How We Measure

Pants and Shorts


With the major buttoned up open the jeans and lay them flat like shown. Measure from the front where the major button closes to the back belt loop. Then double this measurement to achieve the waist measurement.

The way we measure is different from 'Side to Side', If you are not used to our method you should downsize by 1 inch.

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

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.