UnderFitReviews of underfit.com

Finally found an undershirt that stays tucked, does not shrink and fits like a glove. Very comfortable.

These are by far the best men's undershirts we've found. They are soft and not bulky and fit well under dress shirts, particularly slim fit dress shirts. Great find!

Like others on here, I love the fabric, the length of the shirt, as I'm 6'6" and athletic build, and finding a shirt to stay tucked in all day was impossible before this. I wear them every day, they hold up really well, they don't "hold on" to the stink that other shirts do, they don't yellow, I'm very impressed. I had purchased a few a couple years ago, and the stitching at the V was tearing, so I emailed the company. They replied, said they had an issue with a run of shirts, replaced them all, and offered a discount on an additional purchase. I gave them another shot, and have had ZERO issues since, over a year ago. I stopped looking for undershirts, these fit all my requirements.

Okay. I don't wear the UnderFit Shirts in my house. BUT--I do handle them the most in the laundry room, and I love how easy they are to keep looking brand new! Mostly, though, I love these shirts because The Husband is deliriously happy since he's found them. He loves a V-neck T-shirt and wears one all year round under his dress shirts. These shirts fit his athletic frame perfectly and don't bunch up like other cotton shirts. Also, because these shirts are longer, even though he's 6'4", they stay tucked in ALL DAY. Plus, during warm months, they're much cooler to wear because the fabric is so lightweight. In other words, these are the shirts that my man has wished for. And when he's happy, I'm delighted! I also love buying American-made products (and we even used to live in STL.) Thank you for these shirts; we're customers for life!

Tried one shirt to see how I liked it. They are great, very comfortable, they stay tucked in all day long. I cannot recommend these shirts enough.

Most importantly, it stays tucked in. Great product.

I purchased one of these undershirts for my husband because he was never satisfied with the ones we purchased at major retail stores. One of his biggest complaints was that they weren't ever long enough. My husband is a little over 6' with a long torso. He was so pleased with the Underfit! He hasn't had any trouble with it coming untucked or riding up. The fabric is comfortable and moves with his body. We just ordered 10 more! We will be replacing all of his undershirts with Underfits.

The shirts bit and feel great. They don't poof out or come untucked. The quality is superb. I've had my shirts for a couple months now and they are still just as good as when I first got them. They are a somewhat tight fit, but not in the way a shirt that is too small fits. It stays close to your body and doesn't flair out causing bubbles or anything in your dress shirt. The longer shirt tail is perfect for making sure it stays tucked in. I have never had these shirts come out in dress pants, jeans, or shorts. The customer service is also superb. I preferred the crew style over the v-neck, and all doing an exchange took was sending an email and going to the post office. No hoops to jump through of justification was necessary.