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Grayboy - No Days Off

Size Guide


Chest 38.75"
Body Length 26.25"
Sleeve 8"


Chest 40.75"
Body Length 27"
Sleeve 8.25"


Chest 42.5"
Body Length 28.5"
Sleeve 8.5"


Chest 45.5"
Body Length 30"
Sleeve 9"

All measurements are garment sizing

Built for
No Days Off

The idea for No Days Off came in 2014, as a tangible way to build habits and recommit to running in the year ahead. The psychology is simple: while setting big goals can be impossibly daunting, maintaining daily systems in the service of that goal can be much more effective. Commit to consistency in 2020 in our No Days Off Grayboy, made from our Varsity Cotton that wears in, not out.

Knit and produced in MA for Tracksmith. 
Screen-printed graphic on front and back.
 Fabric  treated to help eliminate odor.

88% Cotton /12% Rayon Jersey

Wash Cold With Like Colors
Hang Dry

Mike is 6’ and wears a size medium.

Earn It With Sweat

The nickname “Grayboy” was given to the standard-issue tee-shirts handed out to the Georgetown track team. The shirt was a badge of honor. To get one, you either had to make the team, or become very close friends with someone who had. Made in Massachusetts from our bespoke Varsity Cotton, the Grayboy is our take on the team-issued training tee.

Wears In. Not Out. 

When it comes to training tees, they very literally don’t make them like they used to. So we did it for ourselves. Developed and manufactured in Massachusetts, our proprietary Varsity Cotton blend is  88% cotton, 12% Rayon, 100% not pre-anything’d. Built to be soaked with sweat, worn and washed for a lifetime or more.


The Grayboy is made entirely in our home state. The fabric is knit, the shirts sewn and the graphics printed within an hour’s drive of our Boston headquarters. 


Draper Knitting has been operating in our backyard of Canton, Massachusetts since 1856. Now into its sixth generation, this family run firm is dedicated to both the heritage of their process and the future of American manufacturing. To this day, Draper mills reverberate with the clatter of old and new machinery – traditional methods bumping comfortably alongside creative textile innovation.

We’re proud to have worked with Draper to develop the unique Varsity Cotton blend we use in our Grayboys. One touch and we think you’ll agree, they’ve woven something very special for us, and for you.

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