The Flat Head

The Flat Head FN-8005 Size Chart

Every published measurement for the The Flat Head FN-8005, size by size, widths flat and waist doubled, the numbers the tag size doesn't tell you.

CutRegular Straight
Maker's fit nameRegular Straight
Fabric18oz Rinsed: Given one light wash before sale: sanforized, one-washed, or rinsed. Minimal further shrinkage. Selvedge Denim (American Cotton, Right Hand Twill)
MillNot listed
Sizes30–38

In a size 33, the The Flat Head FN-8005 measures 32″ waist, 10.6″ front rise, 12.25″ thigh and 8.75″ leg opening. Sizes on its chart run from 2″ under the tag to 1″ under it, and each size up adds 1¼″. From knee to hem, the leg narrows ½″.

Measurements in inches, widths flat and waist doubled
SizeWaistFront RiseBack RiseThighKneeLeg OpeningInseam
302810.251411.68.68.232.5
3129.510.2514.511.98.98.2532.5
323110.514.51298.632.5
333210.61512.259.258.7533
343210.7514.512.59.4932.5
3634.511.2515.251310.759.333.2
3836.511.7515.513.410.259.7533.25

Scroll the table sideways for the rest of the columns.

Listed under: Straight · Regular

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About The Flat Head

Founded in 1996 by Masayoshi Kobayashi, The Flat Head began as the original label of Desert Hills Market, an American casual shop in Nagano. The brand aims to make vintage-replica jeans, drawing on old denim fabrics and sewing details, and its flagship Pioneer denim, introduced in 2001, is woven at a mill in Kojima. Its jeans carry chain-stitched hems and yokes, concealed back-pocket rivets, a goat leather patch, and lemon-colored arcuates. The Flat Head holds that a garment only reaches its full value once its owner has worn it in.

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Source: retailer size chart (opens in new tab). Last verified 2026-07-12. Always confirm with the retailer before buying — fits are re-cut seasonally.