UnderFit Reviews 382

The UnderFit shirts feel great against my skin and look perfect!

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.

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: 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.

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.

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

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.

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.

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!

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!

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.

I made my first V-neck undershirt purchase back in 2016, and since then I have placed several more orders and could not be happier. They are extremely comfortable and hold up to daily wear and washings. The material thickness is perfect as I am in Florida, and it does get warm and traditional undershirts are too thick for summer wear. Finally, the material stretches while staying tucked into your pants so no re-tucking. It is a fantastic product and one I wear every day.

I received my Underfit Undershirt in a timely manner. I tried the undershirt on along with the dress shirt that I'm wearing to my daughter's wedding and I couldn't be happier with your product. I used the "Size and Fit guide" to be sure before ordering. I'm glad that I did because I almost recommend Underfit undershirts for anyone looking for an undershirt to wear with a dress shirt.

The shirts are just perfect. The material is super soft, just the right tightness and washes well. I ended up getting a few more to stock up! Just noticed new colors are added!!! Customer service is truly outstanding btw.

Outstanding fit, Fast shipping
I’ve ordered 4 or 5 different brands of undershirt in an attempt to find what I want. From cheap ones on Amazon that shrink to $60 ones that are form shaping. These are perfect for me. The collar is tight, the shirt tail is long, the fabric is thin. If these hold up, I’ll never buy another undershirt.

After over a year, collars are holding up and shirts are holding color. Love them.

I love these shirts, I have 3 of them. They feel great, are snug, don't show and as such, I have been wearing them for any shirt I want to protect from deodorant/sweat stains. Essential if you have nice shirts you want to keep around for as long as possible.

Love the nude tshirts under my white dress shirts. They hold up well and the customer service is great.

I love the fit on these shirts and love the way it keeps you cool and dry at the same time, it will definitely protect your shirts from sweat.

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 camouflages 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!