A few years ago, I picked up a Carhartt Mens Loose Fit Heavyweight Short-Sleeve Pocket T-Shirt during a sale much like the one currently happening on Amazon. Since then, I havent found much reason to wear any other t-shirt. This is Carhartts bread-and-butter shirt, so it rarely goes on sale. Right now, however, every size and color is 25 percent off. That makes most sizes $15 and the extended sizes (of which Carhartt makes a ton) roughly $18. You can choose between the loose fit and the relaxed fit (see below for the difference). These shirts last forever and come in a ton of different hues, so grab the one that works for you and live in it. Then maybe grab one of the companys classic work jackets that it recently re-engineered.Carhartt Men's Loose Fit Heavyweight Short-Sleeve Pocket T-Shirt $15 (was $20)This is how a T-shirt should be. Its made from 100 percent jersey knit cotton, so it wont pill or stink like polyester blends. The color will also patina much better than a synthetic fabric. It has a ribbed neckline that resists stretching and the pocket on the front is basically indestructible. I crammed my heavy tape measure in there for more than an hour and it went right back to the right shape without distorting. Compared to the Relaxed Fit shirt below, the Loose Fit is boxier with more room through the chest, shoulders, and body, giving it a more traditional workwear shape. Its designed to be roomy and has a drop shoulder. Its available in every size from extra-small up to 5X with tall versions of each size. These run a little big, so consider sizing down one if you dont want a baggy shirt.You can find the womens size and color options here. Carhartt Men's Relaxed Fit Heavyweight Short-Sleeve Pocket T-Shirt $15 (was $20)Carhartt This shirt is made from the same burly materials with toughness in mind. The only real difference is the fit. The relaxed fit still has some room to it, but it tapers slightly more through the sides and arms, making it feel a bit more modern and closer to a standard t-shirt fit without being tight. This is a more common look for people buying it purely for fashion. Its available up to size 4XL with tall versions thrown in as well.