Boncoura 15oz Denim US Navy Cap (Black)

Inspired from 1940s US Navy Cap, these have been refined to a NEXT LEVEL!

It is constructed with Boncoura’s specially developed 15oz black denim. The cotton threads are pure indigo dyed, then these threads are ‘Sumi-Overdyed’ using tree bark. This makes it different from all the double indigo that looks black. Instead the sumi tree bark overdyed on top of pure indigo dye threads creates a true black that has amazing fades into indigo! The white weft allows for high contrast fades so you will not be left with a dirty fade.

If you are looking for a perfect denim cap to age along with, these are some ideal ones!

  • 100% Cotton
  • Japanese 15oz light purple selvage ID smooth & uneven textured denim
  • Pure grand indigo thread dyed then Sumi overdyed warp
  • 6 Panels Construction
  • Made In Japan
  • M(59cm); L(61cm); XL(63cm)

NOTES: The garment will shrink 1 ~ 2cm smaller with washes and stretch if it fits snug.

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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.