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.