Freewheelers "Crew Neck Type" L/S Underwear (Jet Black)

Size Guide

Layer up for the cold with Freewheelers!

Freewheelers' have taken inspiration from underwear styles from the late 1800s to early 1900s to create these ultra-comfortable heavyweight thermal tops!

Made from a specially-developed heavyweight cotton rib fabric slowly woven on vintage machines, these feel more like a sweatshirt than a regular thermal shirt. With time, the thread-dyed colourways will age to a soulful look!

With an elegant slim fit, these are perfect for wearing with denim or chinos on a cool day, and make an ideal layering option when paired with a jacket or coat for colder days!

If you are looking for the ultimate heavyweight thermal shirt, you can't ignore Freewheelers!

  • 100% Cotton
  • Japanese ultra heavyweight rib fabric
  • Colour is over-dyed (which will age gradually with wear & washes)
  • Ribbed collar cuffs
  • Flat stitching construction
  • Slim fit
  • Made In Japan

NOTES: The garment will stretch 1'' ~ 2’’ bigger in the chest & vertical length; 0.5’’ ~ 1’’ bigger in other dimensions with wear. Please consider buying it in a snug fit.

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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.