About UnderFit
Data updated- Website
- underfit.com
- Category
- Shopping & Fashion
- Location
- United States
- Status
- Unclaimed
- Last 12 months
- 24 reviews
- Replies to negative
- 64% (9/14)
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About this business
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.
Written by the business, not verified by us.Is UnderFit legit?
UnderFit (underfit.com) has a 4.3 out of 5 rating on OK.one, based on 101 user reviews collected here. It is listed under Shopping & Fashion and its reputation is good. 83% of reviews are 4 stars or higher and 14% are 1 star; The business has replied to 64% of negative reviews; Reviews mostly discuss Product, Quality, Customer service. Last updated 2026-09-05.
What reviewers say
AI generatedReviewers overwhelmingly had a great experience with this company. Customers frequently praise the exceptional comfort and soft texture of the undershirts, noting they feel wonderful and fit perfectly when worn. Consumers also appreciate the high quality and durable material that holds up well over repeated washes without losing shape or performance. However, some people mentioned that certain items did not fit properly and required exchanges to get the right size. A few reviewers also noted occasional sizing challenges, pointing out that specific pieces felt too tight initially. Others experienced minor drawbacks regarding the fabric feel or material characteristics during warmer weather.
Auto-generated from all reviews of this business. For reference only.What people say
Best undershirts I've ever tried (and…
Best undershirts I've ever tried (and I've tried a bunch). So comfortable I forget they're there. And they never come untucked. And the sleeves are short enough they don't peak out of my t-shirts. 6 ft, 175 pounds and medium is perfect for me.
The Perfect Undershirt!
The UnderFit shirts feel great against my skin and look perfect!
Under fit shirts are the best shirts…
Under fit shirts are the best shirts ever. Especially if you have to wear button down shirts tucked in. Worth every penny.
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
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.
Best undershirts I've ever had
Best undershirts I've ever had. I even wear them with casual clothing. These shirts have become an essential layer of every outfit.
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
Best undershirts anywhere!
Hands down, these are the best undershirts I have found. They are soft, comfortable, and most importantly they don’t show with my dress shirts.
Love these shirts!
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!!!
Excellent Customer Service
I placed an order from Canada with Underfit and had issues receiving it within a suitable time frame. I expressed my dissatisfaction with respect to these circumstances and the Underfit company quickly contacted me to rectify the situation. I would like to recognize the quality of their customer service which is quite rare these days. They've regained my trust and respect and I wouldn't hesitate to reorder from them again. Thank-you Underfit!!!
Updated review. My issue is resolved.
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 requested to get a return label and refund and had not heard back after contacting the company a few times. A week and a half later, they did respond and will process a return. They had a support gap, which I hope is resolved now. Bottom line, the product could be for you, but not for everyone. Their support had a hiccup, it seems resolved now.
Reply from UnderFit2025-07-22
Thanks for the updated review and for giving us the chance to make things right. Totally understand that our undershirts aren’t for everyone, especially if you’re used to traditional cotton. We intentionally went with a performance fabric that’s lightweight and form-fitting, but I get that the feel can be unexpected at first. You’re also right about the delay in support. We had a gap earlier this year and I’m actively working to make sure that doesn’t happen again. Appreciate your honesty and the update. —Leigh, Owner of UnderFit
I’ve made multiple attempts to contact…
I’ve made multiple attempts to contact this company regarding a return—leaving several messages and sending emails—but I have yet to receive any response. The product does not fit well at all and is not true to size in my experience. Given the complete lack of communication and customer service, I’m left with no choice but to leave this review. Disappointing experience all around. Update 8/4/25: After 2 weeks and negative reviews, the company reached out, provided a full refund, and advised me to donate the shirts to a local charity, which I did.
Reply from UnderFit2025-07-22
Hi Robert, I’m really sorry for the experience you had. I take full responsibility for the lack of communication and the frustration it caused. I issued a refund a few weeks ago and followed up via email, but I completely understand how disappointing it must have been not to hear back sooner. I’ve since started onboarding a new customer service rep to help ensure this kind of issue doesn’t happen again. Thank you for your patience, and again, I’m truly sorry. – Leigh, Owner of UnderFit
DO NOT BUY THIS PRODUCT UNLESS YOU WANT…
DO NOT BUY THIS PRODUCT UNLESS YOU WANT TO WASTE YOUR MONEY. I was sent the wrong size then reached out to the company over 5 times in the last 2 months and still no response for help, exchange, return, nothing. Absolutely terrible & non existent customer service. Even if the shirt did fit, the shirt quality is sub-par at best - the material was thinner than tissue paper and felt like I was wearing a plastic/ rubber bag against my skin. WARNING - DO NOT BUY THIS PRODUCT
Reply from UnderFit2025-07-23
Hi Jeff, this is Leigh — I’m the owner of UnderFit. I want to sincerely apologize for your experience. You reached out multiple times and didn’t hear back. That’s a failure on our part, and I take full responsibility. Earlier this year, we had a serious breakdown in our support coverage. I’ve since made concrete changes to ensure this doesn’t happen again. Our support is now running the way it should — fast, reliable, and personal. If there’s any way I can make this right, I’d really appreciate the chance. Feel free to reach out directly at [email protected]. – Leigh Owner, UnderFit.com
No response from UnderFit
I placed an order with UnderFit on Feb 6, 2025. Within 30 minutes I cancelled the order. On Feb 7 I received an email saying my order was being processed. I responded that I had cancelled the order on Feb 6. I received no response from UnderFit. On Feb 10 I received an email with the subject " Your order has been delivered". I responded that I wanted to return it and that I had cancelled the order on Feb. 6. I received no response from UnderFit. On Feb 11 I went to the "CONTACT" page on the UnderFit website and left the following message: “I would like to return this order. I sent an email yesterday but have not received a response.” I received no response from UnderFit. On Feb. 12 I received an email with the subject "We'd love your feedback". It included the following: “If you happened to run into any issues with your order, don't hesitate to reach out to Leigh at underfit.com. We're here to help!” I responded on Feb. 13 in an email addressed to Leigh with a summary of everything listed above and copies of the email correspondence. As of today, I still have not received a response from UnderFit.
Reply from UnderFit2025-07-23
Hi Gil, this is Leigh — I’m the owner of UnderFit. I want to personally apologize for the experience you had. You reached out multiple times and didn’t get a response. That’s unacceptable, and I take full responsibility. Earlier this year, I had a breakdown in our customer support process. I’ve since made changes to make sure this doesn’t happen again. Our response times are now much faster, and we have systems in place to make sure every customer is heard. I appreciate you taking the time to share your experience — even though it was a tough one to read, it’s pushed me to improve how we operate. If there’s any way I can make this up to you, I’d truly appreciate the opportunity. Feel free to reach out directly at [email protected]. – Leigh Owner, UnderFit.com
I love their crew neck t-shirts.
I love their crew neck t-shirts soo much! I love the tighter fit and thin light weight soft fabric. Perfect. They don't pill and remain soft. I have had them for about a year and a half and have 3 orders for multiple shirts. I hope these shirts are never changed.
Perfect for your big day!
I’ve had experience with Thompson Tee’s beige anti-sweat slim fitting v-neck but it couldn’t compare to the slightly darker color beige of UnderFit’s which camouflage’s nicely under a white dress shirt. I put my trust in it last weekend on my wedding day and couldn’t be happier with the feel and appearance. Gave me the confidence to truly enjoy the day to the fullest. Thank you!
Best Undershirts!
I got these for my husband to wear under polo shirts. He wasn't thrilled at first, but now says they're comfortable, don't trap heat, and smooth out chest hair without feeling tight. They may not be the sexiest undershirts, but they definitely deliver on performance and comfort!
I’m UNDER…Your Spell
Hands down, UNDERFIT has been one of the most rewarding purchases I've made in a long time. There's no needless hype behind these incredible undershirts-they are what they claim them to be. Silky smooth; moisture-wicking;snug-fitting in a most comfortable way...I can't imagine how I've lived without thus product as long as I have. I'm genuinely sold, and so grateful that this product! My one gripe? That they aren't offered in black. Please strongly consider bringing these to market, as they would pair nicely with other items in a man's wardrobe as well.
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