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About Us

Smart Underwear
for Smart Guys

Pairing premium fabrics, meticulous attention to detail and a simple shopping experience, we deliver a new level of daily comfort straight to your door.

how it started

Shopping for basics was always a chore. There was the pilgrimage to the department store, the mind-numbing assortment to dig through, and the products that always disappointed once you got them home. Even when you did find something you liked, a year later it’d be gone. And don’t even get us started on all the over-sexed, airbrushed ads.

There had to be a better way.

We founded Mack Weldon out of a belief that we could make superior, well-made basics worth wearing and a shopping experience that wouldn’t make going commando look like a more pleasant alternative. From our fabrics to our design process, we started from scratch, obsessing over every single detail until we’d reached as close to perfect as humanly possible. The result: a collection of shirts, socks, and underwear made with an unparalleled fit and fabrics that wear unlike any other. All that, and they’re shipped right to your door.

we make the basics,
so we keep things basic.


The difference between good and great is a dedication to detail, no matter how small. We’re committed to making undershirts that stay tucked, socks that stay up, and waistbands that don’t roll--to name a few.


Everything we make is crafted using premium cottons blended with natural fibers with built-in performance capabilities for a product that feels great and works hard.


Your time is valuable and simple assortments mean quick and easy shopping. It’s underwear, not a stock portfolio. Get in, get out, and continue conquering your world.

Try on guarantee

Underwear is personal. You won’t know if it’s the right fit for you until you try it on. So go ahead. Give it a go. If it’s not quite right, we’ll send you a different size, style, or issue a refund. No questions or returns needed.

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What do you think?

Guys don't typically talk about their underwear, which makes these reviews even more special.

"It sounds cliche but I feel naked without my Macks on." - Matt, CT
"Best. Underwear. Ever." - John, IL
"I am very happy and see no reason to ever buy socks or underwear in a store again. Keep it rolling!" - Chris, RI
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