We’re thrilled to bring RibbedTee into the UnderFit family! Together, we’re continuing the legacy of premium comfort and exceptional quality you’ve always trusted.
UnderFit is now led by Leigh McKenzie, who oversees the brand, website, and customer service. If you have any questions, feel free to reach out—I’m here to help.
Our TENCEL™ undershirts are very similar to RibbedTee’s most popular items. We’re also planning to recreate the original RibbedTee Boxer Briefs in 2025, so stay tuned!
Your RibbedTee account has not been transferred. However, creating a new account with UnderFit is quick and easy, and you’ll enjoy the same great service with added benefits.
RibbedTee’s founder, Mike Schwarz, wanted to move on to new ventures but made sure the brand and loyal customers were in good hands. After aligning on shared goals and values, he trusted UnderFit to carry on RibbedTee’s legacy.
Our products are made using TENCEL™ fibers from Lenzing, a global leader in environmentally responsible production processes. More than 99% of their fibers come from sustainably grown forests.
All UnderFit products are manufactured in Vietnam with a factory partner we’ve trusted for over five years.
Yes, we ship to nearly every country! The full list of shipping destinations is available at checkout. International shipping costs are based on actual rates, with no extra surcharge.
You can reach us by filling out the form at underfit.com/contact-us or emailing us directly at service@underfit.com.
Experience The UnderFit Difference
Super-soft fabric
The secret to UnderFit’s superior comfort starts with the fabric. We use a TENCEL™ fabric blend that feels great against your skin, provides all-day comfort all day and is built to last.
Lasting durability
What good is an undershirt if it tears or has holes after only a few uses? That’s why we use durable TENCEL™ fabric in our shirts. Unlike cotton, it has an exceptionally high tensile strength, making it harder to rip and tear. It also means your undershirt will continue to keep its great shape after repeated wear and washings.
Greater breathability
In addition to the softness, UnderFit’s TENCEL™ fabric also offers superior breathability. This means that your undershirt will help you stay cool when things start heating up.
Superb temperature regulation
Whether you’re at work or out on the town, you want to minimize heat as much as possible to avoid excessive sweating. Our TENCEL™ fabric blend helps to regulate temperature to let your body breathe when the heat goes up.
Advanced moisture absorption
Just because you’re perspiring doesn’t mean others need to know about it. UnderFit offers the best undershirts for men who sweat, thanks to advanced moisture absorption that stops sweat in its tracks, so the rest of your clothes stay dry and fresh.
Odor resistance
TENCEL™ fabric has moisture-wicking technology to limit moisture, keep you dry and prevent odor-causing bacteria. It’s just like the moisture wicking you expect from high-performance workout apparel, but designed for your day-to-day lifestyle instead.
Eco-friendly & sustainable
We care about the environment just as much as we care about making the best mens undershirt! That’s why we only source our raw material from sustainably grown forest plantations.