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18 Hour Jersey   -   Crew Neck Undershirt   -   $ 32

Crew Neck Undershirt


A good undershirt is supposed to do its job behind the scenes. Ours features a slim fit that sits close to the body and a longer cut that stays tucked. Add in flat-lock seaming for a super comfortable crew neck that maintains a low profile.


From the fabrics that we create, down to the stitches and seams, we've focused on the details so you don't have to.

lay flat collar

forward shoulder seam

extra length, stays tucked

try on guarantee

If you don’t like your first pair of underwear, we’ll send you a different size, style, or issue you a refund. No returns required.

hassle-free returns

We make returns as painless as possible. Just contact our team in NYC and they’ll walk you through our free return process.

free shipping over $50

This one needs no explanation or calculator. Just spend over $50 and we’ll ship your gear free of charge.

hear what our customers are saying

”The fabric is great, the length solves the tuck issue, the cut allows lots of arm mobility. Very satisfied.”- Will, CA
”I REALLY like the undershirts I ordered from you. I will remember your brand and website VERY favorably. Your design and quality of this particular item are five-star!”- Darren, TX
”Your undershirts are extremely comfortable and are now my favorite. In a nutshell, there is a clear difference in quality and level of thought put into design when it comes to your products. I am going to be recommending Mack Weldon to everyone I know.”- Syed, IL