The Flat Head 12oz Selvage Flannel Workshirt (Green Forest)

Size Guide

Years later, TFH's standard flannel is still one of our most popular items!

When talking about the most popular semi-casual items the flannel is no doubt a "Gotta-Get-It" item.

The heavyweight flannel fabric has been specially developed using vintage looms to make a raised textured surface, unlike any other brand! Looking closely you can see the herringbone twill pattern is woven so that with time the pattern will maintain its contrast. When checking the inner details you can see TFH have exposed the flannel selvage elegantly.

For added durability, the entire shirt has been skillfully sewn with vintage machines using extra heavy threads.

With ongoing use, this one will age up to a vintage soulful look. Thanks to the thread dyed colourway, you'll see more shades of colour with wear.

For the best of the best flannel shirts, this is it!

  • 100% Cotton
  • Japanese 12oz selvage HBT check flannel
  • Colours are yarn-dyed
  • Twin chest pockets
  • Cinch collar
  • Urea buttons
  • Brushed interior (soft like some cashmere)
  • 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.