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Our invisible deep v-neck undershirt disappears beneath your thinnest or light-colored dress shirts and outer layers. The light, breathable TENCEL™ fabric absorbs sweat, prevents odors and keeps you cool.
We back all of our undershirts with a 100-day guarantee. We’re so confident in them that in the unlikely event that the collar ‘bacon necks’ or a seam breaks, don’t sweat it! We’ll gladly replace it with a new one.
No creases. No V-neck outline. Just seamless, invisible comfort.
With a white undershirt, you can see the v neck and sleeves under many light colored dress shirts.
With an UnderFit tone undershirt, the undershirt disappears. Our tone color works for both light and dark skin.
UnderFit undershirts are just in a different universe compared to what you’re used to. We took everything we hated about basic undershirts – the baggy fit, the stagnant, non-stretchy materials, the static cling, the way they soak when you sweat – and made a product that solves for every single one of our complaints.
We believe men deserve better than what they’ve been given for decades, and finally perfected an undershirt that:
Men have been working with what they’ve been given, but what they’ve been given is a bad undershirt experience. We know confidence starts underneath, and we’re ready to re-introduce you to comfort.
To look your best, you have to feel your best. You don’t need a rock-solid physique to rock the invisible undershirt. Our shirts work for guys of all shapes and sizes.
Here’s what our customers told us they love about UnderFit:
Our undershirts are made from TENCEL™ fabric blend, a highly-sustainable textile sourced from wood chips. The trees are sustainably farmed and our manufacturing process is “closed-loop,” meaning there is little to no waste.
While we’re proud of making a sustainable product, we’re even more proud of just how ridiculously comfortable these undershirts are. You’ll never want to take it off. Seriously.
Menswear experts universally praise the Invisible Undershirt
Gotta tell you, it’s a very nice product. Good fit, good feel, good price. Comparatively, the UnderFit fits and feels very close (or as nice as) to the more expensive micromodal/lycra undershirts.
No rising, No billowing. We managed to get through a whole day without a single untuck from under our made-to-measure shirts.
The problem with most undershirts is that they’re just T-shirts. UnderFit’s shirts are made from lightweight yet durable fabrics with a touch of stretch and are designed to be worn under your shirts.
All of our undershirts are backed by a 100-day guarantee. Don’t love it? Contact us and we’ll make it right.
Free Returns & Exchanges
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The shirts are perfect. The material is super soft, just the right tightness and washes well. Customer service is also outstanding!
Noticeably better feel and comfort than my previous go-to cotton undershirts. Cooler feel. Just enough stretch in the fit. And a subtle colour that camouflages any undergarment ‘peeks’.
These undershirts are amazing. It feels like I'm not wearing an undershirt at all, but I'm also clean and dry. I will definitely be ordering more in the future and recommending UnderFit to others.
Very comfortable! A little concerned the collars won't hold up, but time will tell.
I have been wearing the shirts under my dress shirts and am very impressed with how they function. I would like to see an option for a v neck that is not so deep. Maybe half, something that would sit nicely just under a dress shirt that has just one button undone.