Looking for an undershirt can be hard. Do you want thick for the cold weather? Or do you want something just thin enough to wear and protect your shirts from damaging sweat/deodorant? This undershirt is a great product made by dockers surprisingly.

I wear medium shirts, but realize that I am nearing the large size pretty soon in my future. However I decided to stick with a medium size because I know that a good undershirt also has some length to it to allow for tucking it into the pants.
These shirts are thin but durable. I cannot really compare to too many shirts out there. But have you ever worn the undershirts sold at Costco? If not, go to your nearest Costco and simply feel them. They are a bit thick and help with temperature control. But I don't like the Costco brand because they are thick! I want my undershirts to be thin and breathable. I want them to prolong the life of my shirts by preventing the sweat and deodorant from absorbing into them and changing the color/texture over time. The undershirts and plenty long so that- when tucked into jeans or dress pants- they fall a good 3-4 inches below the belt line. Nothing is more annoying than a shirt that tucks in a measly 1- 1 1/2 in your pants and slips out the moment you lean back or bend over. Same with an undershirt. If it pulls out then it will add bulk to your midsection until you find a place where you can re-tuck it in. No problems with this shirt so far. Price according to some is great but being a college student I wish they were a tad cheaper.

If you are looking for a shirt that adds a bit of bulk and makes your appearance a little "fuller", go for a thicker product. If you are looking for a shirt that can help with cold weather/retaining heat, look for a thicker product. But if you need thinness, 100% cotton, breathability and durability, I highly recommend this product!