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Review summary

Created with AI, based on recent reviews

Considering 49 reviews, reviewers had a great experience with this company. Customers consistently praise the product, highlighting its exceptional quality, comfort, and durability. Many people appreciate how well the undershirts fit, stay tucked in, and effectively wick away sweat, making them ideal for various climates and as an invisible layer under dress shirts. Reviewers frequently mention that these undershirts are the best they have ever owned, often replacing their entire wardrobe with them due to their long-lasting nature and superior feel. However, some people were dissatisfied with the customer service, reporting difficulties in receiving responses to their inquiries about returns, order issues, or quality concerns, and noting a lack of accessible contact numbers. A few other people also felt that the product material was too thin, felt synthetic, or did not adequately resist odors, and some experienced issues with sizing or seams separating after initial use.

What people talk about most

Product

Clients share positive opinions on product, with many reviewers praising the exceptional quality, comfort,... See more

Quality

Reviewers highlight positive aspects of quality, with many praising the perfect fit and exceptional quality... See more

Customer service

Users describe ambiguous interactions with customer service, with some reviewers praising the excellent... See more

Order

Reviewers mention ambiguous feedback about order, with some expressing satisfaction and plans for future... See more

Customer communications

Customers express significant dissatisfaction with the contact process, frequently reporting a lack of... See more

Reviews shaping this summary

Rated 4 out of 5 stars

Updated review: I did not love the undershirts. They fit and they are as advertised, but too thin for my taste. Also I’m used to cotton and this feels very differently. It’s not for everyone. I... See more

Company replied

Rated 4 out of 5 stars

I love the spec on the garment as you don't see it when you wear a shirt with first button unbuttoned. but the fabric is not good lot of my older shirts have the tencel or the modal burning out from... See more

Rated 4 out of 5 stars

Customer service informed me of what size undershirt they recommended me to order. This gave me more confidence in buying their product. The undershirts did not clear customs in New Zealand... See more

Company replied

Rated 5 out of 5 stars

These undershirts are above and beyond the best I've worn. They don't shrink or lose shape, they help wick away sweat more easily than cotton, and they always stay tucked in. The only thing you'd need... See more


Company details

  1. Men's clothes shop
  2. Clothing Shop

Written by the company

UnderFit undershirts are cut longer and lightly hug your hips and below, to stay tucked in all day. Our fabric is ideal for undershirts due to its exceptional softness, advanced moisture absorption, odor resistance and superb breathability. If you want to remain less comfortable in your run-of-the-mill undershirt, by all means, DON’T buy an UnderFit.


Contact info

4.2

Great

TrustScore 4 out of 5

382 reviews

5-star
4-star
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1-star

Replied to 33% of negative reviews

Typically replies within 2 weeks

How this company uses Trustpilot

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Rated 5 out of 5 stars

Are UnderFit Shirts Worth It?

Do you value comfort, performance and longevity? UnderFit offers a premium product at a premium price point. Supporting a small business that funnels resources to ensuring consistent product quality is a net plus, too.

16 December 2024
Unprompted review
Rated 5 out of 5 stars

Great undershirts!

Great undershirts!! So soft and they keep their shape afterwards. Love the higher neck line. I have them in white, black and gray!

25 August 2025
Unprompted review
Rated 5 out of 5 stars

Best-in-Class every time

I’ve been wearing Underfit shirts for years, and nothing else compares. The quality and comfort are unbeatable, and every time I wear one I feel confident and sharp. They’re an absolute essential in my wardrobe—I won’t go without them.

24 August 2025
Unprompted review
Rated 5 out of 5 stars

Great shirts

Great shirts. Perfect fit. Tried a couple of other brands once when Underfit was sold out of my size. Never again. UnderFit is the only choice for me now.

9 October 2024
Unprompted review
Rated 5 out of 5 stars

The best undershirt

I’ve been wearing these for years. They fit great. Comfortable. They don’t come untucked. They protect your shirts. They last a long time. Customer service is excellent too. I was short a few shirts on my last order and the owner of the company fixed it himself in less than a day.

They’re a bit expensive, but totally worth it.

8 August 2025
Unprompted review
Rated 4 out of 5 stars

I love the spec

I love the spec on the garment as you don't see it when you wear a shirt with first button unbuttoned. but the fabric is not good lot of my older shirts have the tencel or the modal burning out from the lyocell. looks like a burn out. this could be because your blending these fibers. over time the fabric is losing strength.
i wish you can make this in cotton spandex 160GSM product will be great and last forever and not stick to your body. you can take it one step further with Supima cotton. just my thoughts i am in the apparel business.

23 August 2025
Unprompted review
Rated 5 out of 5 stars

Cool. Not visible.

This t-shirt does its job by not showing, fits snugly, keeps me cool, and protects my dress shirts. In comparison cotton t-shirts are like another layer of clothing and create bunch up bulges.

23 August 2025
Unprompted review
Rated 5 out of 5 stars

Simply the best!

Simply the best!

While the shirts do last a long time, I like to replace them annually to get that new shirt feeling.

I've tried other shirts, but I came back and will not leave again!

25 April 2025
Unprompted review
Rated 5 out of 5 stars

I was so happy to know that this brand…

I was so happy to know that this brand was renewed. I was a big fan of the previous company Ribbed Tee's product and stoked to find out that UnderFit resurrected it. I have bought several of these and will be buying more to ensure I've got enough to last a lifetime.

5 May 2025
Unprompted review
Rated 5 out of 5 stars

The closest thing to a perfect undershirt

I have purchased various forms of performance Undershirts over the past 13 years or so. (I can't begin to imagine how much I've spent on ones that I didn't like). I never found a "perfect" one until Underfit. It's the first one where the sleeves don't stick out when I'm wearing it under a short sleeve t-shirt, it is long enough to stay tucked in, absorbs sweat well in the Arizona heat and most importantly they last. I have all the original ones I purchased over a year ago and have worn every week. They are in great shape still. Do yourself a favor, spend the money on these, it's a worthwhile investment in your comfort.

22 August 2025
Unprompted review
Rated 5 out of 5 stars

The ordering process is very…

The ordering process is very straightforward and I received my orders as promised, besides the orders the shirts are fantastic and that’s why I’ve ordered three sets!!! Hoping for a Navy Blue color, not only do I use them as undershirts but I also use them as regular tshirts also!!!

22 August 2025
Unprompted review
Rated 5 out of 5 stars

I have gotten both T-shirts and…

I have gotten both T-shirts and underwear from Under Armor. They have been the longest-lasting and best feeling t-shirts I have ever owned. I have used them for over a decade with minor degradation. I

22 August 2025
Unprompted review
Rated 5 out of 5 stars

The only undershirts you need

Searched a wide range of brands to find the right undershirt, then I found underfit. I have a drawer full of crew and v neck and wear them all year round. Super comfortable whether it's freezing NYC weather or sweltering summer. Won't buy, or wear, anything else.

22 August 2025
Unprompted review
Rated 5 out of 5 stars

Great strealth undershirts

I've been wearing underfit shirts for a long time now - a perfect combination of softness, deep V neck to avoid the shirt showing even under dress shirts, and a great feel

5 September 2024
Unprompted review

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