It's true
It's true. They are THE most comfortable t-shirts ever. :)
By UnderFit C.
Monday, November 9, 2026 · Customer reviews of US businesses
The Fair Hearing score
Excellent
365 reviews
Select a line to read only those reviews.
Honesty, pricing, process and quality scores appear once 5 customers have rated them.
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.
UnderFit (underfit.com) has 365 customer reviews on The Fair Hearing, with an average rating of 4.5 out of 5.
Showing 279 reviews with 5 stars · Clear filters
It's true. They are THE most comfortable t-shirts ever. :)
By UnderFit C.
Very good product. How long they last will be next question. Optimistic they will last a long time.
By UnderFit C.
Honest and fast
By UnderFit C.
Best underwear ever!
By UnderFit Customer R.
I am a tall man and was skeptical of buying a T which was not a Tall. Glad I bought, fits comfortably close to the skin, cool, and lightweight.
By Dale
I bought underfit tee shirts for my son... when he asked for more and my husband asked for some...I knew they must be fabulous... no one knows your wearing them...nice snug fit...warm in the winter....cool in the summer...you will not regret this purchase.
By Happy C.
Great fit, quality material. Wears and washes well. I highly recommend these t shirts.
By Cheryl M.
Love the vests. However they do eventually lose their smooth feel and tightness and start to stretch.
By UnderFit C.