Maru Sankaku Peke By SDA Indigo 'Boro Style' Jacketed Shirt

Size Guide

Vintage classics reborn!

Since debuting the Maru Sankaku Peke line, SDA has brought us some of the most amazing creations that are all made from authentic deadstock fabrics repurposed to create something new!

This 'Boro style' patchwork jacketed shirt is made using a vintage indigo-dyed heavyweight flannel. Inspired by traditional Japanese 'boro' fabrics, this shirt features sashiko reinforcements and irregular panel construction, exemplifying the beauty of true wabi-sabi style! Each panel is uniquely faded to show the different levels of indigo ageing and will become even better with time! The faded flannel check pattern adds a subtle, tasteful character making up for a soulful look!

To complement the deadstock fabric, MSP has chosen engraved nut buttons for tonal contrast!

If you are for a one-of-a-kind 'boro' shirt inspired by traditional Japanese garments, then MSP could be a great choice!

  • 100% Cotton
  • Japanese deadstock heavyweight flannel
  • Genuine indigo is yarn-dyed
  • Left chest pocket
  • Natural nut buttons
  • Traditional Japanese 'boro style' patchwork construction
  • Once washed (minimal shrinkage)
  • Slim fit
  • Made In Japan

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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.